EP3225651B1 - Silage film, fodder packaging material, and fodder storage method - Google Patents
Silage film, fodder packaging material, and fodder storage method Download PDFInfo
- Publication number
- EP3225651B1 EP3225651B1 EP15862751.3A EP15862751A EP3225651B1 EP 3225651 B1 EP3225651 B1 EP 3225651B1 EP 15862751 A EP15862751 A EP 15862751A EP 3225651 B1 EP3225651 B1 EP 3225651B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- resin composition
- containing compound
- hydroxy group
- layer
- silage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000004460 silage Substances 0.000 title claims description 124
- 238000000034 method Methods 0.000 title claims description 25
- 238000003860 storage Methods 0.000 title claims description 11
- 239000005022 packaging material Substances 0.000 title 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 149
- 239000011342 resin composition Substances 0.000 claims description 126
- 150000001875 compounds Chemical class 0.000 claims description 107
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 claims description 77
- 238000002844 melting Methods 0.000 claims description 35
- 230000008018 melting Effects 0.000 claims description 35
- 229920005989 resin Polymers 0.000 claims description 22
- 239000011347 resin Substances 0.000 claims description 22
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 13
- 239000005977 Ethylene Substances 0.000 claims description 13
- 229920005672 polyolefin resin Polymers 0.000 claims description 7
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 claims description 6
- 239000010410 layer Substances 0.000 description 81
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 64
- 239000002356 single layer Substances 0.000 description 45
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 31
- 239000001301 oxygen Substances 0.000 description 31
- 229910052760 oxygen Inorganic materials 0.000 description 31
- 230000000052 comparative effect Effects 0.000 description 23
- 239000004840 adhesive resin Substances 0.000 description 19
- 229920006223 adhesive resin Polymers 0.000 description 19
- 230000002209 hydrophobic effect Effects 0.000 description 19
- 229920005992 thermoplastic resin Polymers 0.000 description 17
- 230000005540 biological transmission Effects 0.000 description 16
- -1 polyethylene Polymers 0.000 description 16
- 230000009477 glass transition Effects 0.000 description 15
- 230000004888 barrier function Effects 0.000 description 14
- 238000002156 mixing Methods 0.000 description 12
- 239000004014 plasticizer Substances 0.000 description 10
- 238000005259 measurement Methods 0.000 description 9
- 239000000155 melt Substances 0.000 description 9
- 238000000465 moulding Methods 0.000 description 9
- 239000004698 Polyethylene Substances 0.000 description 8
- 229920000573 polyethylene Polymers 0.000 description 8
- 229920000092 linear low density polyethylene Polymers 0.000 description 7
- 238000007127 saponification reaction Methods 0.000 description 7
- QXJQHYBHAIHNGG-UHFFFAOYSA-N trimethylolethane Chemical compound OCC(C)(CO)CO QXJQHYBHAIHNGG-UHFFFAOYSA-N 0.000 description 7
- 244000025254 Cannabis sativa Species 0.000 description 6
- 239000004743 Polypropylene Substances 0.000 description 6
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 6
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 6
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 6
- 239000004707 linear low-density polyethylene Substances 0.000 description 6
- 230000007774 longterm Effects 0.000 description 6
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical class O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 6
- 229920001155 polypropylene Polymers 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- IAZDPXIOMUYVGZ-WFGJKAKNSA-N Dimethyl sulfoxide Chemical compound [2H]C([2H])([2H])S(=O)C([2H])([2H])[2H] IAZDPXIOMUYVGZ-WFGJKAKNSA-N 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 4
- 229920002292 Nylon 6 Polymers 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 230000003750 conditioning effect Effects 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 238000000855 fermentation Methods 0.000 description 4
- 230000004151 fermentation Effects 0.000 description 4
- 229920001567 vinyl ester resin Polymers 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- ALQSHHUCVQOPAS-UHFFFAOYSA-N Pentane-1,5-diol Chemical compound OCCCCCO ALQSHHUCVQOPAS-UHFFFAOYSA-N 0.000 description 3
- 229920002367 Polyisobutene Polymers 0.000 description 3
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004898 kneading Methods 0.000 description 3
- 239000004310 lactic acid Substances 0.000 description 3
- 235000014655 lactic acid Nutrition 0.000 description 3
- 229920006122 polyamide resin Polymers 0.000 description 3
- 229920000098 polyolefin Polymers 0.000 description 3
- 239000004711 α-olefin Substances 0.000 description 3
- 238000005160 1H NMR spectroscopy Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 2
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 2
- 239000013032 Hydrocarbon resin Substances 0.000 description 2
- 229920006372 Soltex Polymers 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 125000001931 aliphatic group Chemical group 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 235000011187 glycerol Nutrition 0.000 description 2
- GJBXIPOYHVMPQJ-UHFFFAOYSA-N hexadecane-1,16-diol Chemical compound OCCCCCCCCCCCCCCCCO GJBXIPOYHVMPQJ-UHFFFAOYSA-N 0.000 description 2
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 2
- 229920006270 hydrocarbon resin Polymers 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 239000004611 light stabiliser Substances 0.000 description 2
- 244000144972 livestock Species 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- 239000000178 monomer Substances 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 238000005453 pelletization Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 229940059574 pentaerithrityl Drugs 0.000 description 2
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 229930195734 saturated hydrocarbon Natural products 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- GDGUCRQNTDPGSD-UHFFFAOYSA-N 2,2-bis(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)(CO)CO.OCC(CO)(CO)CO GDGUCRQNTDPGSD-UHFFFAOYSA-N 0.000 description 1
- QLZJUIZVJLSNDD-UHFFFAOYSA-N 2-(2-methylidenebutanoyloxy)ethyl 2-methylidenebutanoate Chemical class CCC(=C)C(=O)OCCOC(=O)C(=C)CC QLZJUIZVJLSNDD-UHFFFAOYSA-N 0.000 description 1
- SFRDXVJWXWOTEW-UHFFFAOYSA-N 2-(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)CO SFRDXVJWXWOTEW-UHFFFAOYSA-N 0.000 description 1
- WMYINDVYGQKYMI-UHFFFAOYSA-N 2-[2,2-bis(hydroxymethyl)butoxymethyl]-2-ethylpropane-1,3-diol Chemical compound CCC(CO)(CO)COCC(CC)(CO)CO WMYINDVYGQKYMI-UHFFFAOYSA-N 0.000 description 1
- TXBCBTDQIULDIA-UHFFFAOYSA-N 2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)(CO)COCC(CO)(CO)CO TXBCBTDQIULDIA-UHFFFAOYSA-N 0.000 description 1
- PTJWCLYPVFJWMP-UHFFFAOYSA-N 2-[[3-hydroxy-2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)(CO)COCC(CO)(CO)COCC(CO)(CO)CO PTJWCLYPVFJWMP-UHFFFAOYSA-N 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 239000004386 Erythritol Substances 0.000 description 1
- UNXHWFMMPAWVPI-UHFFFAOYSA-N Erythritol Natural products OCC(O)C(O)CO UNXHWFMMPAWVPI-UHFFFAOYSA-N 0.000 description 1
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical group OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 1
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 1
- 241000186660 Lactobacillus Species 0.000 description 1
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 125000002723 alicyclic group Chemical group 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 239000004599 antimicrobial Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 238000005102 attenuated total reflection Methods 0.000 description 1
- 239000002981 blocking agent Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical class C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- UNXHWFMMPAWVPI-ZXZARUISSA-N erythritol Chemical compound OC[C@H](O)[C@H](O)CO UNXHWFMMPAWVPI-ZXZARUISSA-N 0.000 description 1
- 235000019414 erythritol Nutrition 0.000 description 1
- 229940009714 erythritol Drugs 0.000 description 1
- YCUBDDIKWLELPD-UHFFFAOYSA-N ethenyl 2,2-dimethylpropanoate Chemical compound CC(C)(C)C(=O)OC=C YCUBDDIKWLELPD-UHFFFAOYSA-N 0.000 description 1
- UIWXSTHGICQLQT-UHFFFAOYSA-N ethenyl propanoate Chemical compound CCC(=O)OC=C UIWXSTHGICQLQT-UHFFFAOYSA-N 0.000 description 1
- 229920006242 ethylene acrylic acid copolymer Polymers 0.000 description 1
- 229920006226 ethylene-acrylic acid Polymers 0.000 description 1
- 229920006244 ethylene-ethyl acrylate Polymers 0.000 description 1
- 229920005676 ethylene-propylene block copolymer Polymers 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- SXCBDZAEHILGLM-UHFFFAOYSA-N heptane-1,7-diol Chemical compound OCCCCCCCO SXCBDZAEHILGLM-UHFFFAOYSA-N 0.000 description 1
- RZXDTJIXPSCHCI-UHFFFAOYSA-N hexa-1,5-diene-2,5-diol Chemical compound OC(=C)CCC(O)=C RZXDTJIXPSCHCI-UHFFFAOYSA-N 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 238000007602 hot air drying Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
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- 239000002667 nucleating agent Substances 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
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- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
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- 239000004645 polyester resin Substances 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 229920001470 polyketone Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920003225 polyurethane elastomer Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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- 238000001228 spectrum Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- XLKZJJVNBQCVIX-UHFFFAOYSA-N tetradecane-1,14-diol Chemical compound OCCCCCCCCCCCCCCO XLKZJJVNBQCVIX-UHFFFAOYSA-N 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 229920001862 ultra low molecular weight polyethylene Polymers 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F25/00—Storing agricultural or horticultural produce; Hanging-up harvested fruit
- A01F25/13—Coverings
-
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-
- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
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- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
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- C08J2323/08—Copolymers of ethene
Definitions
- the present invention relates to the use of a film that has at least one layer of a resin composition comprising an ethylene-vinyl alcohol copolymer (A) and a hydroxy group-containing compound (B) as a silage film.
- the silage film has excellent oxygen barrier property and stretchability (suitability for wrapping).
- the present invention also relates to wrapped fodder comprising the silage film of the present invention as well as a storage method of fodder using the wrapped fodder.
- Silage means a harvested fodder crop stored in a silo for lactic acid fermentation.
- the fermentation generates substances such as lactic acid and acetic acid, which suppress activity of putrefactive bacteria and proteolytic bacteria, resulting in long-term storage of fodder.
- Organic acids generated by the fermentation become an important nutrition for livestock.
- a wrap silo using a silage film is widely used to prepare silage, for storing grass .
- a wrap silo is a method to control the silage quality by and hermetically sealed wrapping and sealing grass with a silage film.
- the interior of the wrap should be oxygen free.
- Good quality of silage is mainly attributed to lactic acid fermentation. Since lactobacilli are anaerobic, it is important that no oxygen is present in the wrap silo for their enhanced activity.
- Typical silage films which are mainly made of polyethylene, have insufficient oxygen barrier properties and therefore may allow oxygen penetration into a wrap silo during long-term storage, leading to silage decomposition. In this case, the silage is no longer usable as a fodder for livestock.
- Japanese Patent Laying-Open No. 2003-276123 (PTD 1) suggests a silage film having excellent gas barrier properties produced by using a polyamide resin.
- Japanese Patent Laying-Open No. 2014-172928 (PTD 2) suggests a silage film having excellent gas barrier properties produced by using an ethylene-vinyl alcohol copolymer.
- EP 3 135 724 A1 discloses an ethylene-vinyl alcohol resin composition, molded article and multi-layer structure.
- JP S62 85942 A (PTD 4) describes a multilayer molded shape.
- a silage film produced by using a polyamide resin as in PTD 1 has insufficient oxygen barrier property and therefore the resulting silage has insufficient long-term storage stability.
- a silage film produced by using an ethylene-vinyl alcohol copolymer as in PTD 2 has sufficient oxygen barrier property and therefore has no problem in long-term storage stability of the resulting silage, but it sometimes breaks when the film is wrapped around grass by a wrapping machine.
- An object of the present invention is to provide the use of a films as a silage film having excellent oxygen barrier property and stretchability (suitability for wrapping).
- the present invention provides the use of a film as a silage film, the film having:
- the melting point of the hydroxy group-containing compound (B) preferably ranges from 23°C to 200°C.
- the hydroxy group-containing compound (B) has a ratio of number of hydroxy groups per molecule to the molecular weight preferably ranging from 0.022 to 0.025.
- the hydroxy group-containing compound (B) is preferably 1,1,1-trimethylolpropane.
- the content of the hydroxy group-containing compound (B) in the resin composition preferably ranges from 5% to 10% by mass.
- the ethylene unit rate of the ethylene-vinyl alcohol copolymer (A) is preferably ranging from 20 mol% to 60 mol%.
- the total layer thickness of the silage film ranges from 5 ⁇ m to 200 ⁇ m and the thickness ratio of the layer of the resin composition in the total layer thickness ranges from 1% to 20%.
- the silage film used in the present invention preferably has a polyolefin resin layer on at least one side of the layer of the resin composition.
- the layer of the resin composition is preferably an intermediate layer.
- the present invention also provides wrapped fodder comprising a silage film having:
- the present invention further provides a storage method of fodder using the wrapped fodder of the present invention.
- the present invention can provide the use of a film as a silage film having excellent oxygen barrier property and stretchability (suitability for wrapping).
- the present invention also provides wrapped fodder comprising the silage film used in the present invention as well as a storage method of fodder using the wrapped fodder.
- a silage film used in the present invention has at least one layer (resin composition layer) of a resin composition comprising an ethylene-vinyl alcohol copolymer (A) and a hydroxy group-containing compound (B).
- the resin composition comprising an ethylene-vinyl alcohol copolymer (A) and a hydroxy group-containing compound (B) in the silage film used in the present invention contains the ethylene-vinyl alcohol copolymer (EVOH) (A) as a main component, which is a copolymer primarily composed of an ethylene unit and a vinyl alcohol unit.
- the EVOH (A) can be obtained by saponification of a copolymer of ethylene and vinyl ester with the use of an alkaline catalyst or the like, for example.
- Typical examples of the vinyl ester include vinyl acetate, and other fatty acid vinyl esters (such as vinyl propionate and vinyl pivalate) can also be used.
- the EVOH (A) can contain an additional comonomer copolymerized thereto, such as propylene, butylene, an unsaturated carboxylic acid or an ester thereof, a vinylsilane compound, and N-vinylpyrrolidone, provided that the objects of the present invention are not impaired.
- an additional comonomer copolymerized thereto such as propylene, butylene, an unsaturated carboxylic acid or an ester thereof, a vinylsilane compound, and N-vinylpyrrolidone, provided that the objects of the present invention are not impaired.
- the lower limit of ethylene unit rate in the EVOH (A) is preferably 20 mol%, more preferably 25 mol%, particularly preferably 40 mol%.
- the upper limit of ethylene unit rate in the EVOH (A) is preferably 60 mol%, more preferably 55 mol%, particularly preferably 50 mol%.
- the ethylene unit rate is less than 20 mol%, the resin composition is poor in melt moldability and an excellent silage film may not be obtained.
- the ethylene unit rate is greater than 60 mol%, the oxygen barrier property of the resulting silage film may be poor, and the long-term storage stability of silage may be insufficient.
- the saponification degree of the EVOH (A) is preferably greater than or equal to 90 mol%, more preferably greater than or equal to 95 mol%, particularly preferably greater than or equal to 99 mol%.
- the amount of 1,2-glycol bonded to the EVOH (A) is preferably less than 1.8 mol%, more preferably less than 1.5 mol%, further preferably less than 1.0 mol%.
- the amount of bonded 1,2-glycol is preferably and most easily controlled by the polymerization temperature.
- the polymerization is conducted preferably at 40°C to 120°C, more preferably at 50°C to 100°C.
- the amount of bonded 1,2-glycol is represented by the ratio of monomer units contributing to the bonding relative to the total amount of monomer units.
- the lower limit of the melt flow rate (MFR) at 210°C and 2160-g load is preferably 1.0 g/10 minutes, more preferably 2.0 g/10 minutes, and the upper limit is preferably 100 g/10 minutes, more preferably 60 g/10 minutes.
- melt moldability of the resin composition can be further enhanced.
- Only one type of the EVOH (A) can be used or two or more types thereof can be used as a mixture.
- the resin composition comprising the EVOH (A) and the hydroxy group-containing compound (B) in the silage film used in the present invention fundamentally contains the hydroxy group-containing compound (B).
- the hydroxy group-containing compound (B) satisfies the following requirements:
- the resulting silage film can have excellent oxygen barrier property (a low oxygen transmission rate) and excellent stretchability as proven in the examples section below. This phenomenon is probably attributed to the hydroxy group-containing compound (B) with these requirements which acts as a plasticizer for the EVOH (A).
- a hydroxy group-containing compound is not a typical plasticizer, but probably acts as a plasticizer when used with the EVOH (A) in the following mechanism: a hydroxy group of the hydroxy group-containing compound (B) interacts with a hydroxy group of the EVOH (A), and the hydroxy group-containing compound (B) is inserted itself between the chains of the EVOH (A), thereby resulting in enhanced mobility of the molecular chains of the EVOH (A). Therefore, the compound that acts as a plasticizer for the EVOH (A) needs to contain a hydroxy group.
- the hydroxy group-containing compound (B) used in the present invention has a molecular weight of less than or equal to 200 as described above. If a hydroxy group-containing compound having a molecular weight of greater than 200 (such as 1,14-tetradecanediol (molecular weight: 230), 1,16-hexadecanediol (molecular weight: 258), ditrimethylolpropane (molecular weight: 250), dipentaerythritol (molecular weight: 254), or tripentaerythritol (molecular weight: 372)) is used, phase separation is caused due to the poor compatibility with the EVOH (A), and it does not act as a plasticizer.
- a hydroxy group-containing compound having a molecular weight of greater than 200 such as 1,14-tetradecanediol (molecular weight: 230), 1,16-hexadecanediol (molecular weight: 258), ditrimethylo
- the lower limit of molecular weight of the hydroxy group-containing compound (B) is preferably 50, more preferably 75, and the upper limit is preferably 180, more preferably 150.
- the molecular weight of the hydroxy group-containing compound (B) is calculated by adding up mass numbers of all the constituent elements thereof.
- the hydroxy group-containing compound (B) used in the present invention has a ratio of number of hydroxy groups per molecule to the molecular weight (or, a ratio of (number of hydroxy groups per molecule)/(molecular weight)) ranging from 0.02 to 0.03 as described above.
- a hydroxy group-containing compound having a ratio of (number of hydroxy groups per molecule)/(molecular weight) of less than 0.02 such as 1,5-pentanediol (ratio of (number of hydroxy groups per molecule)/(molecular weight): 0.019), 1,6-hexanediol (ratio of (number of hydroxy groups per molecule)/(molecular weight): 0.017), or 1,7-heptanediol (ratio of (number of hydroxy groups per molecule)/(molecular weight): 0.015)) is used as the hydroxy group-containing compound (B), the interaction with the EVOH (A) becomes poor and thereby it is not effective enough as a plasticizer.
- 1,5-pentanediol ratio of (number of hydroxy groups per molecule)/(molecular weight): 0.019
- 1,6-hexanediol ratio of (number of hydroxy groups per molecule)
- the resulting resin composition may have a high glass transition temperature and the resulting silage film may have a high tensile modulus of elasticity, which are unfavorable.
- the hydroxy group-containing compound may cause poor tensile elongation at break or high oxygen transmission rate (OTR) or a patchy appearance of the resulting silage film, which are also unfavorable.
- a hydroxy group-containing compound having a ratio of (number of hydroxy groups per molecule)/(molecular weight) of greater than 0.03 such as 1,2,3-propanetriol (ratio of (number of hydroxy groups per molecule)/(molecular weight): 0.033) or erythritol (ratio of (number of hydroxy groups per molecule)/(molecular weight): 0.033)
- the hydroxy group-containing compound (B) inhibits crystallization of the EVOH (A), and thus the resulting silage film has high oxygen transmission rate.
- the resulting silage film becomes highly hygroscopic, the mobility of hydroxy group-containing compound (B) is enhanced in the silage film and that causes unfavorable bleed-out at high humidity.
- the lower limit of the ratio of (number of hydroxy groups per molecule)/(molecular weight) is preferably 0.021, more preferably 0.022, and the upper limit is preferably 0.025, more preferably 0.023.
- the hydroxy group-containing compound (B) used in the present invention has a melting point (Tm) of greater than or equal to 23°C.
- Tm melting point
- a hydroxy group-containing compound having a melting point of less than 23°C such as 1,2-propylene glycol (melting point: -59°C), 1,4-propylene glycol (melting point: -27°C), 1,4-butanediol (melting point: 20°C), or 1,5-pentanediol (melting point: -18°C)
- the resulting molded article may cause bleed-out, which is unfavorable.
- a hydroxy group-containing compound with a moderately low melting point is considered to be highly effective in enhancing mobility of the chains of the EVOH (A) when mixed with the EVOH, and therefore the upper limit of the melting point of the hydroxy group-containing compound (B) is preferably 200°C, more preferably 100°C.
- the melting point of the hydroxy group-containing compound (B) is measured by a method in accordance with JIS K 0064.
- the hydroxy group-containing compound (B) used in the present invention has a content thereof in the resin composition ranging from 3% to 15% by mass.
- the content of the hydroxy group-containing compound (B) in the resin composition is less than 3% by mass, the hydroxy group-containing compound is not effective enough as a plasticizer, leading to a high glass transition temperature and a high tensile modulus of elasticity of the resulting silage film at room temperature, which are unfavorable.
- the content of the hydroxy group-containing compound (B) in the resin composition is greater than 15% by mass, the resulting silage film has a low oxygen transmission rate or may have poor tensile elongation at break, which is also unfavorable.
- the lower limit of the content of the hydroxy group-containing compound (B) in the resin composition is preferably 4% by mass, more preferably 5% by mass, and the upper limit is preferably 10% by mass, more preferably 8% by mass.
- Examples of the hydroxy group-containing compound (B) having the molecular weight, the ratio of (number of hydroxy groups per molecule)/(molecular weight), and the melting point described above include 1,1,1-trimethylolpropane, 1,1,1-trimethylolethane, trimethylolmethane, and tetramethylolmethane (pentaerythritol).
- 1,1,1-trimethylolpropane and 1,1,1-trimethylolethane are preferable and 1,1,1-trimethylolpropane is particularly preferable to give the resulting molded article a high glass transition temperature and excellent flexibility and to retain a low oxygen transmission rate.
- the resin composition comprising the EVOH (A) and the hydroxy group-containing compound (B) in the silage film used in the present invention may further contain, in addition to the EVOH (A) and the hydroxy group-containing compound (B), a known additive typically contained in the EVOH (A), such as a heat stabilizer, an antioxidant, an antistatic agent, a colorant, an ultraviolet absorber, a lubricant, a plasticizer, a light stabilizer, a surfactant, an antimicrobial agent, a desiccating agent, an anti-blocking agent, a flame retardant, a crosslinking agent, a curing agent, a foaming agent, a nucleating agent, an anti-fogging agent, an additive to give biodegradability, a silane coupling agent, and an oxygen absorbent, provided that the effects of the present invention are not impaired.
- a known additive typically contained in the EVOH (A) such as a heat stabilizer, an antioxidant, an antistatic agent, a color
- the glass transition temperature (Tg) of the resin composition containing the EVOH (A) and the hydroxy group-containing compound (B) in the silage film used in the present invention preferably has a lower limit of 10°C, more preferably 20°C, and preferably has an upper limit of 50°C, more preferably 40°C.
- Tg glass transition temperature
- the glass transition temperature of the resin composition is less than 10°C, the oxygen transmission rate of the resulting silage film tends to be high.
- the glass transition temperature of the resin composition is greater than 50°C, flexibility of the resulting silage film tends to be poor.
- the melting point (Tm) of the resin composition containing the EVOH (A) and the hydroxy group-containing compound (B) in the silage film used in the present invention preferably has a lower limit of 100°C, more preferably 120°C, and preferably has an upper limit of 200°C, more preferably 180°C.
- the resin composition comprising the EVOH (A) and the hydroxy group-containing compound (B) in the silage film used in the present invention can be produced by mixing the components by a known method, such as melt mixing, solution mixing, or mechanical mixing, and then molding the obtained mixture by a known method.
- melt mixing dry blending the components and followed by melt mixing of the obtained blend.
- a known melt-kneading apparatus such as a kneader/extruder, an extruder, a mixing roll, a Banbury mixer, or a plastomill can be used, and typically and industrially preferably, a single or twin screw extruder is used.
- some apparatuses such as a vacuum pump, a gear pump, and/or a screen mesh are preferably equipped.
- the technique of solution mixing include a technique involving dissolving and mixing the components in a common good solvent and then allowing precipitation to occur in a common poor solvent. After melt mixing or solution mixing, the resulting resin can be shaped into a powder form, a spherical or cylindrical pellet form, a flaky form, or in other forms for use.
- the silage film used in the present invention having at least one layer of the resin composition containing the EVOH (A) and the hydroxy group-containing compound (B) described above has excellent oxygen barrier property (a low oxygen transmission rate), does not cause bleed-out, and has a low glass transition temperature and excellent flexibility.
- the absence of bleed-out can be checked under conditions of 40°C and 100%RH.
- the tensile modulus of elasticity (23°C, 50%RH, MD/TD) of the silage film used in the present invention having at least one layer of the resin composition containing the EVOH (A) and the hydroxy group-containing compound (B) described above preferably has a lower limit of 100 MPa, and preferably has an upper limit of 2000 MPa, more preferably 1000 MPa, as measured in accordance with the requirements of JIS K 7161 in terms of a 20- ⁇ m monolayer film.
- the tensile strength at break (23°C, 50%RH, MD/TD) of the silage film used in the present invention having at least one layer of the resin composition containing the EVOH (A) and the hydroxy group-containing compound (B) described above preferably has a lower limit of 20 MPa and an upper limit of 40 MPa as measured in accordance with the requirements of JIS K 7161 in terms of a 100- ⁇ m monolayer film.
- the tensile elongation at break (23°C, 50%RH, MD/TD) of the silage film used in the present invention having at least one layer of the resin composition containing the EVOH (A) and the hydroxy group-containing compound (B) described above preferably has a lower limit of 100% and an upper limit of 500% as measured in accordance with the requirements of JIS K 7161 in terms of a 100- ⁇ m monolayer film.
- the puncture resistance (23°C, 50%RH) of the silage film used in the present invention having at least one layer of the resin composition containing the EVOH (A) and the hydroxy group-containing compound (B) described above preferably has a lower limit of 3 N and an upper limit of 5.0 N as measured in accordance with the requirements of JIS Z 1707 in terms of a 20- ⁇ m monolayer film.
- the oxygen transmission rate (OTR) (20°C, 85%RH) of the silage film used in the present invention having at least one layer of the resin composition containing the EVOH (A) and the hydroxy group-containing compound (B) described above as measured in accordance with the requirements of ISO 14663-2 is preferably as low as possible, and preferably has an upper limit of 50 cc•20 ⁇ m/(m 2 •day•atm), more preferably 30 cc•20 ⁇ m/(m 2 •day•atm).
- a resin contained in another constituent layer of the silage film used in the present invention which is not the layer of the resin composition comprising the EVOH (A) and the hydroxy group-containing compound (B), is not particularly limited.
- the resin contained in another constituent layer is preferably a hydrophobic thermoplastic resin, for example.
- the hydrophobic thermoplastic resin include polyolefin resins; polyethylenes such as linear low-density polyethylenes, low-density polyethylenes, ultra-low-density polyethylenes, ultra-low-density linear polyethylenes, medium-density polyethylenes, and high-density polyethylenes, polyethylene resins such as ethylene- ⁇ -olefin copolymers, polypropylene resins such as polypropylenes, ethylene-propylene (block and random) copolymers, and propylene- ⁇ -olefin (C 4-20 ⁇ -olefin) copolymers, polybutenes, and polypentenes; graft polyolefins obtained by graft modification of these polyolefins with an unsaturated carboxylic acid or an ester thereof, and cyclic polyolefin resins; and ionomers, an ethylene-vinyl acetate copolymer, an ethylene-acrylic acid
- an anti-ultraviolet agent and/or an adhesive component is preferably added.
- the anti-ultraviolet agent include an ultraviolet absorber, a light stabilizer, and a colorant.
- the content of the anti-ultraviolet agent in the hydrophobic thermoplastic resin is typically from 1% by weight to 10% by weight, preferably from 2% by weight to 8% by weight, particularly preferably from 3% by weight to 5% by weight, in the hydrophobic thermoplastic resin. When the content is less than these ranges, the hydrophobic thermoplastic resin tends to be degraded by ultraviolet light. When the content is greater than these ranges, the hydrophobic thermoplastic resin has poor mechanical strength.
- the adhesive component examples include aliphatic saturated hydrocarbon resins such as polyisobutenes and alicyclic saturated hydrocarbon resins.
- the content of the adhesive component in the hydrophobic thermoplastic resin is typically from 1% by weight to 30% by weight, preferably from 2% by weight to 20% by weight, particularly preferably from 3% by weight to 15% by weight.
- the content is appropriate, the overlapped portions of the silage film used in the present invention are adhered to each other when silage is wrapped, and thus hermetic sealing tends to be maintained.
- the content is less than these ranges, gaps are formed between the films to allow air penetration into a silo, impairing long-term storage property of the silage.
- the resulting silage film causes blocking, that makes it impossible to unwind the film roll.
- the MFR at 210°C and a 2160-g load preferably has a lower limit of 1.0 g/10 minutes, more preferably 2.0 g/10 minutes, and preferably has an upper limit of 100 g/10 minutes, more preferably 60 g/10 minutes.
- the difference between the MFR of the hydrophobic thermoplastic resin and the MFR of the resin composition containing the EVOH (A) and the hydroxy group-containing compound (B) is preferably small.
- an adhesive resin layer is preferably interposed between these layers.
- An adhesive resin therein is not particularly limited and can be selected from various resins. Typical examples of the adhesive resin include carboxy group-containing modified polyolefin resins obtained by chemically binding an unsaturated carboxylic acid or an anhydride thereof to a polyolefin resin.
- the adhesive resin examples include polyethylenes modified with maleic anhydride, polypropylenes modified with maleic anhydride, a maleic anhydride-modified ethylene-ethyl acrylate copolymer, and a maleic anhydride-graft-modified ethylene-vinyl acetate copolymer.
- polyethylenes modified with maleic anhydride and polypropylenes modified with maleic anhydride are preferable and polyethylenes modified with maleic anhydride are particularly preferable among these.
- the MFR at 210°C and a 2160-g load preferably has a lower limit of 1.0 g/10 minutes, more preferably 2.0 g/10 minutes, and preferably has an upper limit of 100 g/10 minutes, more preferably 60 g/10 minutes.
- the difference between the MFR of the adhesive resin and the MFR of the resin composition containing the EVOH (A) and the hydroxy group-containing compound (B) is preferably small.
- the layer structure of the silage film is shown below, in which the resin composition layer comprising the EVOH (A) and the hydroxy group-containing compound (B) is represented as F, the hydrophobic thermoplastic resin layer as A, and the adhesive resin layer as MA.
- a layer closer to the left end of the layer structure corresponds to a layer arranged closer to the outside (a side that is exposed to the external environment).
- a structure for preventing moisture in order to avoid degrading oxygen barrier property, a structure, in which the resin composition layer containing the EVOH (A) and the hydroxy group-containing compound (B) represented as F is used as an intermediate layer and the hydrophobic resin composition layer is used as an outer layer, is preferable. And the structures of A/MA/F/MA/A and A/A/MA/F/MA/A/A are more preferable among these.
- the total thickness thereof is typically from 5 ⁇ m to 200 ⁇ m, preferably from 10 ⁇ m to 150 ⁇ m, more preferably from 15 ⁇ m to 100 ⁇ m, particularly preferably from 20 ⁇ m to 50 ⁇ m.
- the thickness of the hydrophobic resin composition layer in the silage film is not particularly limited, but is typically from 0.5 ⁇ m to 200 ⁇ m, preferably from 1 ⁇ m to 100 ⁇ m, particularly preferably from 1 ⁇ m to 10 ⁇ m.
- the thickness ratio of the resin composition layer comprising the EVOH (A) and the hydroxy group-containing compound (B) in the total layer thickness is not particularly limited, but desirably ranges from 1% to 20%, preferably from 2% to 18%, more preferably from 3% to 15%, of the total layer thickness.
- Methods of producing the silage film are broadly classified into a process involving melting the resin composition and then molding the resultant melt (a melt molding process), and also a process involving dissolving the resin composition in solvent and then molding the resultant solution (such as a solution coating process), for example.
- the melt molding process is preferable among these. Specific examples thereof include the following: melt extrusion of the hydrophobic thermoplastic resin on a molded article of the resin composition containing the EVOH (A) and the hydroxy group-containing compound (B); melt extrusion to form the resin composition layer on a base material such as the hydrophobic thermoplastic resin; and coextrusion of the resin composition and the hydrophobic thermoplastic resin. More specifically, cast coextrusion or blown coextrusion is adopted.
- the form of the silo to which the silage film used in the present invention is applied is not particularly limited.
- Examples of the form include a wrap silo form, a bunker silo form, a bag silo form, a tube silo form, and a stack silo form.
- a wrap silo form is particularly preferable.
- a wrap silo is prepared by shaping grass into a bale of a desired volume using a machine such as a roll baler and then wrapping the shaped bale of grass with the silage film used in the present invention using a machine such as a bale wrapper to hermetically seal the silage.
- the amount of air remaining in the hermetically sealed silo affects the quality of the silage, and therefore it is preferable to make the silage film tightly adhered to the silage by applying tension to the silage film to stretch the film while wrapping.
- the present invention also provides wrapped fodder including the silage film used in the present invention.
- the wrapped fodder is an embodiment of silo prepared by shaping fodder by, for example, wrapping the fodder with the silage film used in the present invention.
- the present invention also provides a method of storing fodder using the wrapped fodder of the present invention.
- Measurement was conducted by 1 H-NMR measurement (apparatus: JNM-GX-500 manufactured by JEOL Ltd.) using DMSO-d6 as a solvent.
- Measurement was conducted by 1 H-NMR measurement (apparatus: JNM-GX-500 manufactured by JEOL Ltd.) using DMSO-d 6 as a solvent.
- the discharging rate (g/10 minutes) of a sample was measured by a melt indexer (L244 manufactured by Takarakogyo) under conditions of a temperature at 210°C and with a load of 2160 g.
- the melting point (Tm) and the glass transition temperature (Tg) were determined in accordance with JIS K 7121 using a differential scanning calorimeter (DSC) (Q2000 manufactured by TA Instruments).
- the EVOH (A) and the hydroxy group-containing compound (B) were mixed together and the resulting mixture was subjected to melt kneading, pelletizing, and drying under the following conditions to obtain the resin composition in a pellet form.
- the resulting resin composition was formed into a film under the following conditions. Monolayer films (molded articles) having a thickness of 20 ⁇ m and 100 ⁇ m were thus obtained.
- the resulting 20 ⁇ m monolayer film was subjected to humidity conditioning under conditions of 23°C/50%RH; cut into a strip having a width of 15 mm and a length of 12 cm; and subjected to measurement with AUTOGRAPH AGS-H (manufactured by Shimadzu Corporation) in MD and TD at a chuck-to-chuck distance of 50 mm and a tensile speed of 5 mm/minute.
- the resulting values were used as indexes of flexibility.
- the resulting 100 ⁇ m monolayer film was subjected to humidity conditioning under conditions of 23°C/50%RH; cut into a strip having a width of 15 mm and a length of 12 cm; and subjected to measurement with AUTOGRAPH AGS-H (manufactured by Shimadzu Corporation) in MD and TD at a chuck-to-chuck distance of 50 mm and a tensile speed of 500 mm/minute.
- AUTOGRAPH AGS-H manufactured by Shimadzu Corporation
- the resulting 20 ⁇ m monolayer film was subjected to humidity conditioning under conditions of 23°C/50%RH; cut into a circular test piece having a diameter of 10 cm; immobilized by means of a jig; and on AUTOGRAPH AGS-H (manufactured by Shimadzu Corporation), punctured with a needle having a semicircular cross section with a diameter of 1.0 mm and a tip radius of 0.5 mm at a rate of 50 mm/minute. The maximum stress within the time period until the needle passed through the film was thus obtained.
- the resulting 20 ⁇ m monolayer film was subjected to humidity conditioning under conditions of 20°C/85%RH and then in accordance with ISO14663-2, subjected to measurement of the oxygen transmission rate (OTR) on an oxygen transmission rate meter (OX-Tran 2/20 manufactured by Modern Control) under conditions of 20°C/85%RH
- the resulting 20 ⁇ m monolayer film was stored under conditions of 40°C/100%RH for seven days, followed by visual examination and measurement of infrared absorption spectra by Fourier transform infrared spectroscopy (Spectrum One manufactured by Perkin Elmer) with ATR (attenuated total reflection) mode. The presence or absence of bleed-out of the hydroxy group-containing compound (B) was checked and rated as either the following X or Y.
- the resulting resin composition was formed into a film under the following conditions, followed by trimming into a silage film having a width of 500 mm and an entire thickness of 25.5 ⁇ m.
- a bale of grass shaped into a size of ⁇ 120 cm ⁇ 120 cm was wrapped five times by means of a remote control wrapper WM1600R (manufactured by Takakita Co., Ltd.). Stretchability (suitability for wrapping) was evaluated by frequency of film breakage.
- TMP 1,1,1-trimethylolpropane
- the resulting resin composition was formed into 20 ⁇ m and 100 ⁇ m monolayer films by the above-described method using a single screw extruder, and was also formed into a silage film by the above-described method with a blown multilayer-film extruder.
- the glass transition temperature of the resulting resin composition was measured by the above-described method.
- each of the resulting monolayer films was subjected to measurement of the tensile modulus of elasticity, tensile strength at break, tensile elongation at break, puncture resistance, oxygen transmission rate (OTR), and the presence or absence of bleed-out, and the resulting silage film was evaluated for stretchability (suitability for wrapping). The results are shown in Table 1.
- a resin composition, monolayer films, and a silage film were obtained in the same manner as in Example 1 except that A1 was replaced by an EVOH resin (also called "A2") manufactured by KURARAY CO., LTD. having an ethylene unit rate of 32 mol%, a saponification degree of greater than or equal to 99 mol%, an MFR of 4.4 g/10 minutes (210°C, 2160-g load), and an amount of 1,2-glycol bond of 0.73 mol%.
- the resulting resin composition, monolayer films, and silage film were evaluated in the same manner as in Example 1. The results are shown in Table 1.
- a resin composition, monolayer films, and a silage film were obtained in the same manner as in Example 1 except that 85% by mass of the EVOH resin and 15% by mass of the hydroxy group-containing compound were mixed together.
- the resulting resin composition, monolayer films, and silage film were evaluated in the same manner as in Example 1. The results are shown in Table 1.
- a resin composition, monolayer films, and a silage film were obtained in the same manner as in Example 1 except that 93% by mass of the EVOH resin and 7% by mass of the hydroxy group-containing compound were mixed together.
- the resulting resin composition, monolayer films, and silage film were evaluated in the same manner as in Example 1. The results are shown in Table 1.
- a resin composition, monolayer films, and a silage film were obtained in the same manner as in Example 1 except that 97% by mass of the EVOH resin and 3% by mass of the hydroxy group-containing compound were mixed together.
- the resulting resin composition, monolayer films, and silage film were evaluated in the same manner as in Example 1. The results are shown in Table 1.
- a resin composition, monolayer films, and a silage film were obtained in the same manner as in Example 1 except that TMP as a hydroxy group-containing compound was replaced by 1,1,1-trimethylolethane (also called "TME") (molecular weight of 120, number of hydroxy groups of 3, ratio of (number of hydroxy groups per molecule)/(molecular weight) of 0.025, melting point of 193°C).
- TMP 1,1,1-trimethylolethane
- the resulting resin composition, monolayer films, and silage film were evaluated in the same manner as in Example 1. The results are shown in Table 1.
- a resin composition, monolayer films, and a silage film were obtained in the same manner as in Example 1 except that TMP as a hydroxy group-containing compound was replaced by tetramethylolmethane (pentaerythritol) (also called "TeMM”) (molecular weight of 136, number of hydroxy groups of 4, ratio of (number of hydroxy groups per molecule)/(molecular weight) of 0.029, melting point of 261°C).
- TeMM tetramethylolmethane
- the resulting resin composition, monolayer films, and silage film were evaluated in the same manner as in Example 1. The results are shown in Table 1.
- a resin composition and a molded article were obtained in the same manner as in Example 1 except that A1 was replaced by an EVOH resin (also called "A3") manufactured by KURARAY CO., LTD. having an ethylene rate of 44 mol%, a saponification degree of greater than or equal to 99 mol%, an MFR of 3.3 g/10 minutes (210°C, 2160-g load), and an amount of 1,2-glycol bond of 0.49 mol%.
- the resulting resin composition and molded article were evaluated in the same manner as in Example 1. The results are shown in Table 2.
- a resin composition and a molded article were obtained in the same manner as in Example 1 except that A1 was replaced by an EVOH resin (also called "A4") manufactured by KURARAY CO., LTD. having an ethylene rate of 32 mol%, a saponification degree of greater than or equal to 99 mol%, an MFR of 3.7 g/10 minutes (210°C, 2160-g load), and an amount of 1,2-glycol bond of 0.71 mol%.
- the resulting resin composition and molded article were evaluated in the same manner as in Example 1. The results are shown in Table 2.
- a resin composition and a molded article were obtained in the same manner as in Example 8 except that 85% by mass of the EVOH resin and 15% by mass of the hydroxy group-containing compound were mixed together.
- the resulting resin composition and molded article were evaluated in the same manner as in Example 1. The results are shown in Table 2.
- a resin composition and a molded article were obtained in the same manner as in Example 8 except that 93% by mass of the EVOH resin and 7% by mass of the hydroxy group-containing compound were mixed together.
- the resulting resin composition and molded article were evaluated in the same manner as in Example 1. The results are shown in Table 2.
- a resin composition and a molded article were obtained in the same manner as in Example 8 except that 97% by mass of the EVOH resin and 3% by mass of the hydroxy group-containing compound were mixed together.
- the resulting resin composition and molded article were evaluated in the same manner as in Example 1. The results are shown in Table 2.
- a resin composition and a molded article were obtained in the same manner as in Example 8 except that TMP as a hydroxy group-containing compound was replaced by TME
- the resulting resin composition and molded article were evaluated in the same manner as in Example 1. The results are shown in Table 2.
- a resin composition and a molded article were obtained in the same manner as in Example 8 except that TMP as a hydroxy group-containing compound was replaced by TeMM
- the resulting resin composition and molded article were evaluated in the same manner as in Example 1. The results are shown in Table 2.
- a resin composition, monolayer films, and a silage film were obtained in the same manner as in Example 1 except that no hydroxy group-containing compound was used.
- the resulting resin composition, monolayer films, and silage film were evaluated in the same manner as in Example 1. The results are shown in Table 3.
- a resin composition, monolayer films, and a silage film were obtained in the same manner as in Example 2 except that no hydroxy group-containing compound was used.
- the resulting resin composition, monolayer films, and silage film were evaluated in the same manner as in Example 1. The results are shown in Table 3.
- a resin composition, monolayer films, and a silage film were obtained in the same manner as in Example 1 except that 80% by mass of the EVOH resin and 20% by mass of the hydroxy group-containing compound were mixed together.
- the resulting resin composition, monolayer films, and silage film were evaluated in the same manner as in Example 1. The results are shown in Table 3.
- a resin composition, monolayer films, and a silage film were obtained in the same manner as in Example 1 except that 98% by mass of the EVOH resin and 2% by mass of the hydroxy group-containing compound were mixed together.
- the resulting resin composition, monolayer films, and silage film were evaluated in the same manner as in Example 1. The results are shown in Table 3.
- a resin composition, monolayer films, and a silage film were obtained in the same manner as in Example 1 except that TMP as a hydroxy group-containing compound was replaced by propylene glycol (also called "PPG") (molecular weight of 76, number of hydroxy groups of 2, ratio of (number of hydroxy groups per molecule)/(molecular weight) of 0.026, melting point of -59°C).
- PPG propylene glycol
- the resulting resin composition, monolayer films, and silage film were evaluated in the same manner as in Example 1. The results are shown in Table 3.
- the resulting resin composition had bleed-out of the hydroxy group-containing compound and did not successfully adhere to adhesive resin layer. Therefore, no wrapping test was conducted.
- a resin composition, monolayer films, and a silage film were obtained in the same manner as in Example 1 except that TMP as a hydroxy group-containing compound was replaced by 1,5-pentanediol (also called "PeDO") (molecular weight of 104, number of hydroxy groups of 2, ratio of (number of hydroxy groups per molecule)/(molecular weight) of 0.019, melting point of -18°C).
- TeDO 1,5-pentanediol
- the resulting resin composition, monolayer films, and silage film were evaluated in the same manner as in Example 1. The results are shown in Table 3.
- the resulting resin composition had bleed-out of the hydroxy group-containing compound and did not successfully adhere to adhesive resin layer. Therefore, no wrapping test was conducted.
- a resin composition, monolayer films, and a silage film were obtained in the same manner as in Example 1 except that TMP as a hydroxy group-containing compound was replaced by 1,6-hexanediol (also called "HDO") (molecular weight of 118, number of hydroxy groups of 2, ratio of (number of hydroxy groups per molecule)/(molecular weight) of 0.017, melting point of 42°C).
- HDO 1,6-hexanediol
- a resin composition, monolayer films, and a silage film were obtained in the same manner as in Example 1 except that TMP as a hydroxy group-containing compound was replaced by 1,2,3-propanetriol (also called "PrTO") (molecular weight of 92, number of hydroxy groups of 3, ratio of (number of hydroxy groups per molecule)/(molecular weight) of 0.033, melting point of 18°C).
- PrTO 1,2,3-propanetriol
- a resin composition and a molded article were obtained in the same manner as in Example 1 except that TMP as a hydroxy group-containing compound was replaced by 1,4-butanediol (also called "BDO") (molecular weight of 90, number of hydroxy groups of 2, ratio of (number of hydroxy groups per molecule)/(molecular weight) of 0.022, melting point of 20°C).
- BDO 1,4-butanediol
- Monolayer films and a silage film were obtained in the same manner as in Example 1 except that a linear low-density polyethylene (also called "LLDPE") (TUFLIN HS-7028 NT7 manufactured by The Dow Chemical Company (MFR, 1.0 g/10 minutes)) was used instead of the resulting resin composition.
- LLDPE linear low-density polyethylene
- MFR The Dow Chemical Company
- Monolayer films and a silage film were obtained in the same manner as in Example 1 except that polyamide 6 (also called “PA6”) (UBE nylon 7024B manufactured by Ube Industries, Ltd.) was used instead of the resulting resin composition.
- PA6 polyamide 6
- UBE nylon 7024B manufactured by Ube Industries, Ltd.
- Example 1 Example 2
- Example 3 Example 4
- Example 5 Example 6
- Example 7 Resin type (EVOH (A) type) A1 A2 A1 A1 A1 A1 A1 Hydroxy group-containing low-molecular compound (B)
- Type TMP TMP TMP TMP TMP TMP TME TeMM Molecular weight 134 134 134 134 120 136 Number of hydroxy groups 3 3 3 3 3 4 Ratio of (number of hydroxy groups per molecule) /(molecular weight) 0.022 0.022 0.022 0.022 0.022 0.025 0.029
- Melting point (°C) 58 58 58 58 58 58 193 261 A/B (% by mass/% by mass) 90/10 90/10 85/15 93/7 97/3 90/10 90/10
- Melting point (Tm) (°C) 152 165 151 156 158 150 149
Description
- The present invention relates to the use of a film that has at least one layer of a resin composition comprising an ethylene-vinyl alcohol copolymer (A) and a hydroxy group-containing compound (B) as a silage film. The silage film has excellent oxygen barrier property and stretchability (suitability for wrapping). The present invention also relates to wrapped fodder comprising the silage film of the present invention as well as a storage method of fodder using the wrapped fodder.
- Silage means a harvested fodder crop stored in a silo for lactic acid fermentation. The fermentation generates substances such as lactic acid and acetic acid, which suppress activity of putrefactive bacteria and proteolytic bacteria, resulting in long-term storage of fodder. Organic acids generated by the fermentation become an important nutrition for livestock.
- A wrap silo using a silage film, is widely used to prepare silage, for storing grass . A wrap silo is a method to control the silage quality by and hermetically sealed wrapping and sealing grass with a silage film.
- To ensure good quality of the prepared wrap silage, the interior of the wrap should be oxygen free. Good quality of silage is mainly attributed to lactic acid fermentation. Since lactobacilli are anaerobic, it is important that no oxygen is present in the wrap silo for their enhanced activity.
- Typical silage films, which are mainly made of polyethylene, have insufficient oxygen barrier properties and therefore may allow oxygen penetration into a wrap silo during long-term storage, leading to silage decomposition. In this case, the silage is no longer usable as a fodder for livestock. Japanese Patent Laying-Open No.
2003-276123 2014-172928 EP 3 135 724 A1 (PTD 3) discloses an ethylene-vinyl alcohol resin composition, molded article and multi-layer structure.JP S62 85942 A - PTD 1: Japanese Patent Laying-Open No.
2003-276123 - PTD 2: Japanese Patent Laying-Open No.
2014-172928 - PTD 3:
EP 3 135 724 A1 - PTD 4:
JP S62 85942 A - However, a silage film produced by using a polyamide resin as in PTD 1 has insufficient oxygen barrier property and therefore the resulting silage has insufficient long-term storage stability. A silage film produced by using an ethylene-vinyl alcohol copolymer as in PTD 2 has sufficient oxygen barrier property and therefore has no problem in long-term storage stability of the resulting silage, but it sometimes breaks when the film is wrapped around grass by a wrapping machine.
- The present invention has been developed to solve these problems. An object of the present invention is to provide the use of a films as a silage film having excellent oxygen barrier property and stretchability (suitability for wrapping).
- The present invention provides the use of a film as a silage film, the film having:
- at least one layer of a resin composition comprising an ethylene-vinyl alcohol copolymer (A) and a hydroxy group-containing compound (B), wherein
- the hydroxy group-containing compound (B) has a molecular weight of less than or equal to 200, a ratio of number of hydroxy groups per molecule to the molecular weight ranges from 0.02 to 0.03, and a melting point of greater than or equal to 23°C, and
- the content of the hydroxy group-containing compound (B) in the resin composition ranges from 3% to 15% by mass.
- In the silage film used in the present invention, the melting point of the hydroxy group-containing compound (B) preferably ranges from 23°C to 200°C.
- In the silage film used in the present invention, the hydroxy group-containing compound (B) has a ratio of number of hydroxy groups per molecule to the molecular weight preferably ranging from 0.022 to 0.025.
- In the silage film used in the present invention, the hydroxy group-containing compound (B) is preferably 1,1,1-trimethylolpropane.
- In the silage film used in the present invention, the content of the hydroxy group-containing compound (B) in the resin composition preferably ranges from 5% to 10% by mass.
- In the silage film used in the present invention, the ethylene unit rate of the ethylene-vinyl alcohol copolymer (A) is preferably ranging from 20 mol% to 60 mol%.
- In the silage film used in the present invention, it is preferable that the total layer thickness of the silage film ranges from 5 µm to 200 µm and the thickness ratio of the layer of the resin composition in the total layer thickness ranges from 1% to 20%.
- The silage film used in the present invention preferably has a polyolefin resin layer on at least one side of the layer of the resin composition.
- In the silage film used in the present invention, the layer of the resin composition is preferably an intermediate layer.
- The present invention also provides wrapped fodder comprising a silage film having:
- at least one layer of a resin composition comprising an ethylene-vinyl alcohol copolymer (A) and a hydroxy group-containing compound (B), wherein
- the hydroxy group-containing compound (B) has a molecular weight of less than or equal to 200, a ratio of number of hydroxy groups per molecule to the molecular weight ranges from 0.02 to 0.03, and a melting point of greater than or equal to 23°C, and
- the content of the hydroxy group-containing compound (B) in the resin composition ranges from 3% to 15% by mass.
- The present invention further provides a storage method of fodder using the wrapped fodder of the present invention.
- The present invention can provide the use of a film as a silage film having excellent oxygen barrier property and stretchability (suitability for wrapping). The present invention also provides wrapped fodder comprising the silage film used in the present invention as well as a storage method of fodder using the wrapped fodder.
- A silage film used in the present invention has at least one layer (resin composition layer) of a resin composition comprising an ethylene-vinyl alcohol copolymer (A) and a hydroxy group-containing compound (B).
- The resin composition comprising an ethylene-vinyl alcohol copolymer (A) and a hydroxy group-containing compound (B) in the silage film used in the present invention contains the ethylene-vinyl alcohol copolymer (EVOH) (A) as a main component, which is a copolymer primarily composed of an ethylene unit and a vinyl alcohol unit. The EVOH (A) can be obtained by saponification of a copolymer of ethylene and vinyl ester with the use of an alkaline catalyst or the like, for example. Typical examples of the vinyl ester include vinyl acetate, and other fatty acid vinyl esters (such as vinyl propionate and vinyl pivalate) can also be used.
- The EVOH (A) can contain an additional comonomer copolymerized thereto, such as propylene, butylene, an unsaturated carboxylic acid or an ester thereof, a vinylsilane compound, and N-vinylpyrrolidone, provided that the objects of the present invention are not impaired.
- The lower limit of ethylene unit rate in the EVOH (A) is preferably 20 mol%, more preferably 25 mol%, particularly preferably 40 mol%. The upper limit of ethylene unit rate in the EVOH (A) is preferably 60 mol%, more preferably 55 mol%, particularly preferably 50 mol%. When the ethylene unit rate is less than 20 mol%, the resin composition is poor in melt moldability and an excellent silage film may not be obtained. When the ethylene unit rate is greater than 60 mol%, the oxygen barrier property of the resulting silage film may be poor, and the long-term storage stability of silage may be insufficient.
- From the viewpoint of maintaining oxygen barrier property of the resulting silage film, the saponification degree of the EVOH (A) is preferably greater than or equal to 90 mol%, more preferably greater than or equal to 95 mol%, particularly preferably greater than or equal to 99 mol%.
- From the viewpoint of thermal stability of the resin composition during melt molding process, the amount of 1,2-glycol bonded to the EVOH (A) is preferably less than 1.8 mol%, more preferably less than 1.5 mol%, further preferably less than 1.0 mol%. The amount of bonded 1,2-glycol is preferably and most easily controlled by the polymerization temperature. For example, the polymerization is conducted preferably at 40°C to 120°C, more preferably at 50°C to 100°C. The amount of bonded 1,2-glycol is represented by the ratio of monomer units contributing to the bonding relative to the total amount of monomer units.
- Regarding the melt viscosity of the EVOH (A), the lower limit of the melt flow rate (MFR) at 210°C and 2160-g load is preferably 1.0 g/10 minutes, more preferably 2.0 g/10 minutes, and the upper limit is preferably 100 g/10 minutes, more preferably 60 g/10 minutes. When the EVOH (A) has such melt viscosity, melt moldability of the resin composition can be further enhanced.
- Only one type of the EVOH (A) can be used or two or more types thereof can be used as a mixture.
- The resin composition comprising the EVOH (A) and the hydroxy group-containing compound (B) in the silage film used in the present invention fundamentally contains the hydroxy group-containing compound (B). The hydroxy group-containing compound (B) satisfies the following requirements:
- a molecular weight of less than or equal to 200,
- a ratio of number of hydroxy groups per molecule to the molecular weight ranging from 0.02 to 0.03,
- a melting point of greater than or equal to 23°C, and
- a content thereof in the resin composition ranging from 3% to 15% by mass.
- When the hydroxy group-containing compound (B) satisfying these requirements is used in combination with the EVOH (A), the resulting silage film can have excellent oxygen barrier property (a low oxygen transmission rate) and excellent stretchability as proven in the examples section below. This phenomenon is probably attributed to the hydroxy group-containing compound (B) with these requirements which acts as a plasticizer for the EVOH (A). A hydroxy group-containing compound is not a typical plasticizer, but probably acts as a plasticizer when used with the EVOH (A) in the following mechanism: a hydroxy group of the hydroxy group-containing compound (B) interacts with a hydroxy group of the EVOH (A), and the hydroxy group-containing compound (B) is inserted itself between the chains of the EVOH (A), thereby resulting in enhanced mobility of the molecular chains of the EVOH (A). Therefore, the compound that acts as a plasticizer for the EVOH (A) needs to contain a hydroxy group.
- The hydroxy group-containing compound (B) used in the present invention has a molecular weight of less than or equal to 200 as described above. If a hydroxy group-containing compound having a molecular weight of greater than 200 (such as 1,14-tetradecanediol (molecular weight: 230), 1,16-hexadecanediol (molecular weight: 258), ditrimethylolpropane (molecular weight: 250), dipentaerythritol (molecular weight: 254), or tripentaerythritol (molecular weight: 372)) is used, phase separation is caused due to the poor compatibility with the EVOH (A), and it does not act as a plasticizer. For the hydroxy group-containing compound (B) to be excellently compatible with the EVOH (A) and thereby act as a plasticizer, the lower limit of molecular weight of the hydroxy group-containing compound (B) is preferably 50, more preferably 75, and the upper limit is preferably 180, more preferably 150. The molecular weight of the hydroxy group-containing compound (B) is calculated by adding up mass numbers of all the constituent elements thereof.
- The hydroxy group-containing compound (B) used in the present invention has a ratio of number of hydroxy groups per molecule to the molecular weight (or, a ratio of (number of hydroxy groups per molecule)/(molecular weight)) ranging from 0.02 to 0.03 as described above. If a hydroxy group-containing compound having a ratio of (number of hydroxy groups per molecule)/(molecular weight) of less than 0.02 (such as 1,5-pentanediol (ratio of (number of hydroxy groups per molecule)/(molecular weight): 0.019), 1,6-hexanediol (ratio of (number of hydroxy groups per molecule)/(molecular weight): 0.017), or 1,7-heptanediol (ratio of (number of hydroxy groups per molecule)/(molecular weight): 0.015)) is used as the hydroxy group-containing compound (B), the interaction with the EVOH (A) becomes poor and thereby it is not effective enough as a plasticizer. In this case, the resulting resin composition may have a high glass transition temperature and the resulting silage film may have a high tensile modulus of elasticity, which are unfavorable. Being insufficiently compatible with the EVOH (A), the hydroxy group-containing compound may cause poor tensile elongation at break or high oxygen transmission rate (OTR) or a patchy appearance of the resulting silage film, which are also unfavorable. If a hydroxy group-containing compound having a ratio of (number of hydroxy groups per molecule)/(molecular weight) of greater than 0.03 (such as 1,2,3-propanetriol (ratio of (number of hydroxy groups per molecule)/(molecular weight): 0.033) or erythritol (ratio of (number of hydroxy groups per molecule)/(molecular weight): 0.033)) is used, the hydroxy group-containing compound (B) inhibits crystallization of the EVOH (A), and thus the resulting silage film has high oxygen transmission rate. Furthermore, because the resulting silage film becomes highly hygroscopic, the mobility of hydroxy group-containing compound (B) is enhanced in the silage film and that causes unfavorable bleed-out at high humidity. For the resulting silage film to have a low oxygen transmission rate, a low glass transition temperature, and excellent flexibility, the lower limit of the ratio of (number of hydroxy groups per molecule)/(molecular weight) is preferably 0.021, more preferably 0.022, and the upper limit is preferably 0.025, more preferably 0.023.
- The hydroxy group-containing compound (B) used in the present invention has a melting point (Tm) of greater than or equal to 23°C. When a hydroxy group-containing compound having a melting point of less than 23°C (such as 1,2-propylene glycol (melting point: -59°C), 1,4-propylene glycol (melting point: -27°C), 1,4-butanediol (melting point: 20°C), or 1,5-pentanediol (melting point: -18°C)) is used, the resulting molded article may cause bleed-out, which is unfavorable. A hydroxy group-containing compound with a moderately low melting point is considered to be highly effective in enhancing mobility of the chains of the EVOH (A) when mixed with the EVOH, and therefore the upper limit of the melting point of the hydroxy group-containing compound (B) is preferably 200°C, more preferably 100°C. The melting point of the hydroxy group-containing compound (B) is measured by a method in accordance with JIS K 0064.
- The hydroxy group-containing compound (B) used in the present invention has a content thereof in the resin composition ranging from 3% to 15% by mass. When the content of the hydroxy group-containing compound (B) in the resin composition is less than 3% by mass, the hydroxy group-containing compound is not effective enough as a plasticizer, leading to a high glass transition temperature and a high tensile modulus of elasticity of the resulting silage film at room temperature, which are unfavorable. When the content of the hydroxy group-containing compound (B) in the resin composition is greater than 15% by mass, the resulting silage film has a low oxygen transmission rate or may have poor tensile elongation at break, which is also unfavorable. For the hydroxy group-containing compound to be effective enough as a plasticizer, the resulting resin composition to have a low glass transition temperature, and the resulting silage film to have excellent flexibility and to retain a low oxygen transmission rate, the lower limit of the content of the hydroxy group-containing compound (B) in the resin composition is preferably 4% by mass, more preferably 5% by mass, and the upper limit is preferably 10% by mass, more preferably 8% by mass.
- Examples of the hydroxy group-containing compound (B) having the molecular weight, the ratio of (number of hydroxy groups per molecule)/(molecular weight), and the melting point described above include 1,1,1-trimethylolpropane, 1,1,1-trimethylolethane, trimethylolmethane, and tetramethylolmethane (pentaerythritol). Among these, 1,1,1-trimethylolpropane and 1,1,1-trimethylolethane are preferable and 1,1,1-trimethylolpropane is particularly preferable to give the resulting molded article a high glass transition temperature and excellent flexibility and to retain a low oxygen transmission rate.
- The resin composition comprising the EVOH (A) and the hydroxy group-containing compound (B) in the silage film used in the present invention may further contain, in addition to the EVOH (A) and the hydroxy group-containing compound (B), a known additive typically contained in the EVOH (A), such as a heat stabilizer, an antioxidant, an antistatic agent, a colorant, an ultraviolet absorber, a lubricant, a plasticizer, a light stabilizer, a surfactant, an antimicrobial agent, a desiccating agent, an anti-blocking agent, a flame retardant, a crosslinking agent, a curing agent, a foaming agent, a nucleating agent, an anti-fogging agent, an additive to give biodegradability, a silane coupling agent, and an oxygen absorbent, provided that the effects of the present invention are not impaired.
- The glass transition temperature (Tg) of the resin composition containing the EVOH (A) and the hydroxy group-containing compound (B) in the silage film used in the present invention preferably has a lower limit of 10°C, more preferably 20°C, and preferably has an upper limit of 50°C, more preferably 40°C. When the glass transition temperature of the resin composition is less than 10°C, the oxygen transmission rate of the resulting silage film tends to be high. When the glass transition temperature of the resin composition is greater than 50°C, flexibility of the resulting silage film tends to be poor.
- For ease of melt molding, the melting point (Tm) of the resin composition containing the EVOH (A) and the hydroxy group-containing compound (B) in the silage film used in the present invention preferably has a lower limit of 100°C, more preferably 120°C, and preferably has an upper limit of 200°C, more preferably 180°C.
- The resin composition comprising the EVOH (A) and the hydroxy group-containing compound (B) in the silage film used in the present invention can be produced by mixing the components by a known method, such as melt mixing, solution mixing, or mechanical mixing, and then molding the obtained mixture by a known method. As an examples of melt mixing, dry blending the components and followed by melt mixing of the obtained blend. A known melt-kneading apparatus such as a kneader/extruder, an extruder, a mixing roll, a Banbury mixer, or a plastomill can be used, and typically and industrially preferably, a single or twin screw extruder is used. When needed, some apparatuses such as a vacuum pump, a gear pump, and/or a screen mesh are preferably equipped. Examples of the technique of solution mixing include a technique involving dissolving and mixing the components in a common good solvent and then allowing precipitation to occur in a common poor solvent. After melt mixing or solution mixing, the resulting resin can be shaped into a powder form, a spherical or cylindrical pellet form, a flaky form, or in other forms for use.
- The silage film used in the present invention having at least one layer of the resin composition containing the EVOH (A) and the hydroxy group-containing compound (B) described above has excellent oxygen barrier property (a low oxygen transmission rate), does not cause bleed-out, and has a low glass transition temperature and excellent flexibility.
- The absence of bleed-out can be checked under conditions of 40°C and 100%RH.
- The tensile modulus of elasticity (23°C, 50%RH, MD/TD) of the silage film used in the present invention having at least one layer of the resin composition containing the EVOH (A) and the hydroxy group-containing compound (B) described above preferably has a lower limit of 100 MPa, and preferably has an upper limit of 2000 MPa, more preferably 1000 MPa, as measured in accordance with the requirements of JIS K 7161 in terms of a 20-µm monolayer film.
- The tensile strength at break (23°C, 50%RH, MD/TD) of the silage film used in the present invention having at least one layer of the resin composition containing the EVOH (A) and the hydroxy group-containing compound (B) described above preferably has a lower limit of 20 MPa and an upper limit of 40 MPa as measured in accordance with the requirements of JIS K 7161 in terms of a 100-µm monolayer film.
- The tensile elongation at break (23°C, 50%RH, MD/TD) of the silage film used in the present invention having at least one layer of the resin composition containing the EVOH (A) and the hydroxy group-containing compound (B) described above preferably has a lower limit of 100% and an upper limit of 500% as measured in accordance with the requirements of JIS K 7161 in terms of a 100-µm monolayer film.
- The puncture resistance (23°C, 50%RH) of the silage film used in the present invention having at least one layer of the resin composition containing the EVOH (A) and the hydroxy group-containing compound (B) described above preferably has a lower limit of 3 N and an upper limit of 5.0 N as measured in accordance with the requirements of JIS Z 1707 in terms of a 20-µm monolayer film.
- The oxygen transmission rate (OTR) (20°C, 85%RH) of the silage film used in the present invention having at least one layer of the resin composition containing the EVOH (A) and the hydroxy group-containing compound (B) described above as measured in accordance with the requirements of ISO 14663-2 is preferably as low as possible, and preferably has an upper limit of 50 cc•20 µm/(m2•day•atm), more preferably 30 cc•20 µm/(m2•day•atm).
- A resin contained in another constituent layer of the silage film used in the present invention, which is not the layer of the resin composition comprising the EVOH (A) and the hydroxy group-containing compound (B), is not particularly limited. In order to avoid moisture which causes worse barrier property of the resin composition comprising the EVOH (A) and the hydroxy group-containing compound (B), the resin contained in another constituent layer is preferably a hydrophobic thermoplastic resin, for example. Specific examples of the hydrophobic thermoplastic resin include polyolefin resins; polyethylenes such as linear low-density polyethylenes, low-density polyethylenes, ultra-low-density polyethylenes, ultra-low-density linear polyethylenes, medium-density polyethylenes, and high-density polyethylenes, polyethylene resins such as ethylene-α-olefin copolymers, polypropylene resins such as polypropylenes, ethylene-propylene (block and random) copolymers, and propylene-α-olefin (C4-20 α-olefin) copolymers, polybutenes, and polypentenes; graft polyolefins obtained by graft modification of these polyolefins with an unsaturated carboxylic acid or an ester thereof, and cyclic polyolefin resins; and ionomers, an ethylene-vinyl acetate copolymer, an ethylene-acrylic acid copolymer, ethylene-acrylic acid ester copolymers, polyester resins, polyamide resins, polyvinyl chloride, polyvinylidene chloride, acrylic resins, polystyrenes, vinyl ester resins, polyester elastomers, polyurethane elastomers, halogenated polyolefins such as chlorinated polyethylenes and chlorinated polypropylenes, and aromatic and aliphatic polyketones. In terms of mechanical strength and molding processability, polyolefin resins are preferable, and polyethylenes and polypropylenes are particularly preferable among these.
- For the hydrophobic thermoplastic resin, an anti-ultraviolet agent and/or an adhesive component is preferably added. Examples of the anti-ultraviolet agent include an ultraviolet absorber, a light stabilizer, and a colorant.
- The content of the anti-ultraviolet agent in the hydrophobic thermoplastic resin is typically from 1% by weight to 10% by weight, preferably from 2% by weight to 8% by weight, particularly preferably from 3% by weight to 5% by weight, in the hydrophobic thermoplastic resin. When the content is less than these ranges, the hydrophobic thermoplastic resin tends to be degraded by ultraviolet light. When the content is greater than these ranges, the hydrophobic thermoplastic resin has poor mechanical strength.
- Examples of the adhesive component include aliphatic saturated hydrocarbon resins such as polyisobutenes and alicyclic saturated hydrocarbon resins. The content of the adhesive component in the hydrophobic thermoplastic resin is typically from 1% by weight to 30% by weight, preferably from 2% by weight to 20% by weight, particularly preferably from 3% by weight to 15% by weight. When the content is appropriate, the overlapped portions of the silage film used in the present invention are adhered to each other when silage is wrapped, and thus hermetic sealing tends to be maintained. When the content is less than these ranges, gaps are formed between the films to allow air penetration into a silo, impairing long-term storage property of the silage. When the content is greater than these ranges, the resulting silage film causes blocking, that makes it impossible to unwind the film roll.
- Regarding the melt viscosity of the hydrophobic thermoplastic resin, the MFR at 210°C and a 2160-g load preferably has a lower limit of 1.0 g/10 minutes, more preferably 2.0 g/10 minutes, and preferably has an upper limit of 100 g/10 minutes, more preferably 60 g/10 minutes. The difference between the MFR of the hydrophobic thermoplastic resin and the MFR of the resin composition containing the EVOH (A) and the hydroxy group-containing compound (B) is preferably small. When the melt viscosity of the hydrophobic thermoplastic resin is as described above, an excellent silage film without layer turbulence can be obtained.
- For adhesion between the layer of the resin composition comprising the EVOH (A) and the hydroxy group-containing compound (B) (resin composition layer) and the layer of the hydrophobic thermoplastic resin (hydrophobic thermoplastic resin layer), an adhesive resin layer is preferably interposed between these layers. An adhesive resin therein is not particularly limited and can be selected from various resins. Typical examples of the adhesive resin include carboxy group-containing modified polyolefin resins obtained by chemically binding an unsaturated carboxylic acid or an anhydride thereof to a polyolefin resin. Specific examples of the adhesive resin include polyethylenes modified with maleic anhydride, polypropylenes modified with maleic anhydride, a maleic anhydride-modified ethylene-ethyl acrylate copolymer, and a maleic anhydride-graft-modified ethylene-vinyl acetate copolymer. In terms of mechanical strength and molding processability, polyethylenes modified with maleic anhydride and polypropylenes modified with maleic anhydride are preferable and polyethylenes modified with maleic anhydride are particularly preferable among these.
- Regarding the melt viscosity of the adhesive resin, the MFR at 210°C and a 2160-g load preferably has a lower limit of 1.0 g/10 minutes, more preferably 2.0 g/10 minutes, and preferably has an upper limit of 100 g/10 minutes, more preferably 60 g/10 minutes. The difference between the MFR of the adhesive resin and the MFR of the resin composition containing the EVOH (A) and the hydroxy group-containing compound (B) is preferably small. When the melt viscosity of the adhesive resin is as described above, an excellent silage film having excellent adhesive strength without any layer turbulence can be obtained.
- An example of the layer structure of the silage film is shown below, in which the resin composition layer comprising the EVOH (A) and the hydroxy group-containing compound (B) is represented as F, the hydrophobic thermoplastic resin layer as A, and the adhesive resin layer as MA. A layer closer to the left end of the layer structure corresponds to a layer arranged closer to the outside (a side that is exposed to the external environment).
- Five layers F/MA/A/MA/F, A/MA/F/MA/A, A/MA/F/MA/F
- Six layers A/MA/F/MA/A/A
- Seven layers A/MA/F/MA/F/MA/A, A/A/MA/F/MA/A/A
- For preventing moisture in order to avoid degrading oxygen barrier property, a structure, in which the resin composition layer containing the EVOH (A) and the hydroxy group-containing compound (B) represented as F is used as an intermediate layer and the hydrophobic resin composition layer is used as an outer layer, is preferable. And the structures of A/MA/F/MA/A and A/A/MA/F/MA/A/A are more preferable among these.
- Regarding the thickness of the silage film used in the present invention, the total thickness thereof is typically from 5 µm to 200 µm, preferably from 10 µm to 150 µm, more preferably from 15 µm to 100 µm, particularly preferably from 20 µm to 50 µm. The thickness of the hydrophobic resin composition layer in the silage film is not particularly limited, but is typically from 0.5 µm to 200 µm, preferably from 1 µm to 100 µm, particularly preferably from 1 µm to 10 µm. The thickness ratio of the resin composition layer comprising the EVOH (A) and the hydroxy group-containing compound (B) in the total layer thickness is not particularly limited, but desirably ranges from 1% to 20%, preferably from 2% to 18%, more preferably from 3% to 15%, of the total layer thickness.
- Methods of producing the silage film are broadly classified into a process involving melting the resin composition and then molding the resultant melt (a melt molding process), and also a process involving dissolving the resin composition in solvent and then molding the resultant solution (such as a solution coating process), for example. From the viewpoint of productivity, the melt molding process is preferable among these. Specific examples thereof include the following: melt extrusion of the hydrophobic thermoplastic resin on a molded article of the resin composition containing the EVOH (A) and the hydroxy group-containing compound (B); melt extrusion to form the resin composition layer on a base material such as the hydrophobic thermoplastic resin; and coextrusion of the resin composition and the hydrophobic thermoplastic resin. More specifically, cast coextrusion or blown coextrusion is adopted.
- The form of the silo to which the silage film used in the present invention is applied is not particularly limited. Examples of the form include a wrap silo form, a bunker silo form, a bag silo form, a tube silo form, and a stack silo form. A wrap silo form is particularly preferable.
- A wrap silo is prepared by shaping grass into a bale of a desired volume using a machine such as a roll baler and then wrapping the shaped bale of grass with the silage film used in the present invention using a machine such as a bale wrapper to hermetically seal the silage. The amount of air remaining in the hermetically sealed silo affects the quality of the silage, and therefore it is preferable to make the silage film tightly adhered to the silage by applying tension to the silage film to stretch the film while wrapping.
- The present invention also provides wrapped fodder including the silage film used in the present invention. The wrapped fodder is an embodiment of silo prepared by shaping fodder by, for example, wrapping the fodder with the silage film used in the present invention. The present invention also provides a method of storing fodder using the wrapped fodder of the present invention.
- The present invention is more specifically described by way of examples. The scope of the present invention, however, is not limited to these examples.
- Measurement was conducted by 1H-NMR measurement (apparatus: JNM-GX-500 manufactured by JEOL Ltd.) using DMSO-d6 as a solvent.
- Measurement was conducted by 1H-NMR measurement (apparatus: JNM-GX-500 manufactured by JEOL Ltd.) using DMSO-d6 as a solvent.
- The discharging rate (g/10 minutes) of a sample was measured by a melt indexer (L244 manufactured by Takarakogyo) under conditions of a temperature at 210°C and with a load of 2160 g.
- The melting point (Tm) and the glass transition temperature (Tg) were determined in accordance with JIS K 7121 using a differential scanning calorimeter (DSC) (Q2000 manufactured by TA Instruments).
- The EVOH (A) and the hydroxy group-containing compound (B) were mixed together and the resulting mixture was subjected to melt kneading, pelletizing, and drying under the following conditions to obtain the resin composition in a pellet form.
- Apparatus: 26-mmϕ twin screw extruder (Labo Plastomill 15C300 manufactured by Toyo Seiki Seisaku-sho, Ltd.)
- L/D: 25
- Screw: co-rotating full-intermeshing type
- Number of die holes: 2 holes (3 mmϕ)
- Extrusion temperature (°C): C1 = 200, C2 to C5 = 230, Die = 230
- Rotation speed: 100 rpm
- Output: about 5 kg/hr
- Drying: hot air drying at 80°C for6 hr
- The resulting resin composition was formed into a film under the following conditions. Monolayer films (molded articles) having a thickness of 20 µm and 100 µm were thus obtained.
- Apparatus: 20-mmϕ single screw extruder (Labo Plastomill 15C300 manufactured by Toyo Seiki Seisaku-sho, Ltd.)
- L/D: 20
- Screw: full flight type
- Die: 300mm coat-hanger die
- Extrusion temperature (°C): C1 = 180, C2 to C3 = 200, Die = 200
- Screen: 50/100/50
- Temperature of cooling roll: 20°C
- Rotation speed: (during formation of 20 µm thick film) 40 rpm,
(during formation of 100 µm thick film) 100 rpm - Haul-off speed: (during formation of 20 µm thick film) 3.0 m/minute to 3.5 m/minute,
(during formation of 100 µm thick film) 1.5 m/minute to 1.75 m/minute - In accordance with JIS K 7161, the resulting 20 µm monolayer film was subjected to humidity conditioning under conditions of 23°C/50%RH; cut into a strip having a width of 15 mm and a length of 12 cm; and subjected to measurement with AUTOGRAPH AGS-H (manufactured by Shimadzu Corporation) in MD and TD at a chuck-to-chuck distance of 50 mm and a tensile speed of 5 mm/minute. The resulting values were used as indexes of flexibility.
- In accordance with JIS K 7161, the resulting 100 µm monolayer film was subjected to humidity conditioning under conditions of 23°C/50%RH; cut into a strip having a width of 15 mm and a length of 12 cm; and subjected to measurement with AUTOGRAPH AGS-H (manufactured by Shimadzu Corporation) in MD and TD at a chuck-to-chuck distance of 50 mm and a tensile speed of 500 mm/minute.
- In accordance with JIS Z 1707, the resulting 20 µm monolayer film was subjected to humidity conditioning under conditions of 23°C/50%RH; cut into a circular test piece having a diameter of 10 cm; immobilized by means of a jig; and on AUTOGRAPH AGS-H (manufactured by Shimadzu Corporation), punctured with a needle having a semicircular cross section with a diameter of 1.0 mm and a tip radius of 0.5 mm at a rate of 50 mm/minute. The maximum stress within the time period until the needle passed through the film was thus obtained.
- The resulting 20 µm monolayer film was subjected to humidity conditioning under conditions of 20°C/85%RH and then in accordance with ISO14663-2, subjected to measurement of the oxygen transmission rate (OTR) on an oxygen transmission rate meter (OX-Tran 2/20 manufactured by Modern Control) under conditions of 20°C/85%RH
- The resulting 20 µm monolayer film was stored under conditions of 40°C/100%RH for seven days, followed by visual examination and measurement of infrared absorption spectra by Fourier transform infrared spectroscopy (Spectrum One manufactured by Perkin Elmer) with ATR (attenuated total reflection) mode. The presence or absence of bleed-out of the hydroxy group-containing compound (B) was checked and rated as either the following X or Y.
- X: No bleed-out observed.
- Y: Bleed-out observed.
- The resulting resin composition was formed into a film under the following conditions, followed by trimming into a silage film having a width of 500 mm and an entire thickness of 25.5 µm.
- Apparatus: a 7-kind 7-layer blown film extruder (manufactured by Brampton Engineering)
(Layer structure and thickness of each layer) - 4-kind 7-layer (outer layer 1/outer layer 2/adhesive resin layer 1/resin composition layer/adhesive resin layer 2/outer layer 3/outer layer 4)
- Outer layers 1 and 4: a melt-kneaded product of 97% by weight of a linear low-density polyethylene (TUFLIN HS-7028 NT7 manufactured by Dow Chemical Company (MFR 1.0 g/10 minutes)) and 3% by weight of a polyisobutene (PB32 manufactured by Soltex), 6 µm
- Outer layers 2 and 3: a melt-kneaded product of 90% by weight of a linear low-density polyethylene (TUFLIN HS-7028 NT7 manufactured by Dow Chemical Company (MFR 1.0 g/10 minutes)) and 10% by weight of a polyisobutene (PB32 manufactured by Soltex), 4 µm
- Adhesive resin layers 1 and 2: a linear low-density polyethylene modified with maleic anhydride (Admer NF498 manufactured by Mitsui Chemicals, Inc.), 2.0 µm
- Resin composition layer: a resin composition described in an example and a comparative example, 1.5 µm
-
- Outer layer 1: 45-mmϕ single screw extruder (L/D = 24)
- Outer layer 2: 30-mmϕ single screw extruder (L/D = 24)
- Outer layer 3: 30-mmϕ single screw extruder (L/D = 24)
- Outer layer 4: 45-mmϕ single screw extruder (L/D = 24)
- Adhesive resin layer 1: 30-mmϕ single screw extruder (L/D = 24)
- Adhesive resin layer 2: 30-mmϕ single screw extruder (L/D = 24)
- Resin composition layer: 30-mmϕ single screw extruder (L/D = 20)
- Temperature setting and rotational speed:
- Outer layers 1 and 4: C1/C2/C3/A = 180°C/190°C/205°C/205°C, 27 rpm
- Outer layers 2 and 3: C1/C2/C3/A = 180°C/190°C/205°C/205°C, 69 rpm
- Adhesive resin layers 1 and 2: C1/C2/C3/A = 190°C/225°C/215°C/220°C, 26 rpm
- Resin composition layer: C1/C2/C3/A = 180°C/210°C/215°C/220°C (C1/C2/C3/A = 200°C/230°C/230°C/230°C when the resin composition layer was polyamide 6), 19 rpm
- Die: 150 mm, temperature set at 220°C
- Film haul-off speed: 24 m/minute
- A bale of grass shaped into a size of ϕ 120 cm × 120 cm was wrapped five times by means of a remote control wrapper WM1600R (manufactured by Takakita Co., Ltd.). Stretchability (suitability for wrapping) was evaluated by frequency of film breakage.
- A mixture of 90% by mass of an EVOH resin (also called "A1") manufactured by KURARAY CO., LTD. having an ethylene unit rate of 44 mol%, a saponification degree of greater than or equal to 99 mol%, an MFR of 5.7 g/10 minutes (210°C, 2160-g load), and an amount of 1,2-glycol bond of 0.46 mol% and 10% by mass of 1,1,1-trimethylolpropane (also called "TMP") (molecular weight of 134, number of hydroxy groups of 3, ratio of (number of hydroxy groups per molecule)/(molecular weight) of 0.022, melting point of 58°C) as a hydroxy group-containing compound was subjected to melt kneading and pelletizing by the above-described method using a twin screw extruder, followed by drying in a hot-air dryer at 80°C for 6 hr to obtain a resin composition. The resulting resin composition was formed into 20 µm and 100 µm monolayer films by the above-described method using a single screw extruder, and was also formed into a silage film by the above-described method with a blown multilayer-film extruder. The glass transition temperature of the resulting resin composition was measured by the above-described method. Also by the above-described methods, each of the resulting monolayer films was subjected to measurement of the tensile modulus of elasticity, tensile strength at break, tensile elongation at break, puncture resistance, oxygen transmission rate (OTR), and the presence or absence of bleed-out, and the resulting silage film was evaluated for stretchability (suitability for wrapping). The results are shown in Table 1.
- A resin composition, monolayer films, and a silage film were obtained in the same manner as in Example 1 except that A1 was replaced by an EVOH resin (also called "A2") manufactured by KURARAY CO., LTD. having an ethylene unit rate of 32 mol%, a saponification degree of greater than or equal to 99 mol%, an MFR of 4.4 g/10 minutes (210°C, 2160-g load), and an amount of 1,2-glycol bond of 0.73 mol%. The resulting resin composition, monolayer films, and silage film were evaluated in the same manner as in Example 1. The results are shown in Table 1.
- A resin composition, monolayer films, and a silage film were obtained in the same manner as in Example 1 except that 85% by mass of the EVOH resin and 15% by mass of the hydroxy group-containing compound were mixed together. The resulting resin composition, monolayer films, and silage film were evaluated in the same manner as in Example 1. The results are shown in Table 1.
- A resin composition, monolayer films, and a silage film were obtained in the same manner as in Example 1 except that 93% by mass of the EVOH resin and 7% by mass of the hydroxy group-containing compound were mixed together. The resulting resin composition, monolayer films, and silage film were evaluated in the same manner as in Example 1. The results are shown in Table 1.
- A resin composition, monolayer films, and a silage film were obtained in the same manner as in Example 1 except that 97% by mass of the EVOH resin and 3% by mass of the hydroxy group-containing compound were mixed together. The resulting resin composition, monolayer films, and silage film were evaluated in the same manner as in Example 1. The results are shown in Table 1.
- A resin composition, monolayer films, and a silage film were obtained in the same manner as in Example 1 except that TMP as a hydroxy group-containing compound was replaced by 1,1,1-trimethylolethane (also called "TME") (molecular weight of 120, number of hydroxy groups of 3, ratio of (number of hydroxy groups per molecule)/(molecular weight) of 0.025, melting point of 193°C). The resulting resin composition, monolayer films, and silage film were evaluated in the same manner as in Example 1. The results are shown in Table 1.
- A resin composition, monolayer films, and a silage film were obtained in the same manner as in Example 1 except that TMP as a hydroxy group-containing compound was replaced by tetramethylolmethane (pentaerythritol) (also called "TeMM") (molecular weight of 136, number of hydroxy groups of 4, ratio of (number of hydroxy groups per molecule)/(molecular weight) of 0.029, melting point of 261°C). The resulting resin composition, monolayer films, and silage film were evaluated in the same manner as in Example 1. The results are shown in Table 1.
- A resin composition and a molded article were obtained in the same manner as in Example 1 except that A1 was replaced by an EVOH resin (also called "A3") manufactured by KURARAY CO., LTD. having an ethylene rate of 44 mol%, a saponification degree of greater than or equal to 99 mol%, an MFR of 3.3 g/10 minutes (210°C, 2160-g load), and an amount of 1,2-glycol bond of 0.49 mol%. The resulting resin composition and molded article were evaluated in the same manner as in Example 1. The results are shown in Table 2.
- A resin composition and a molded article were obtained in the same manner as in Example 1 except that A1 was replaced by an EVOH resin (also called "A4") manufactured by KURARAY CO., LTD. having an ethylene rate of 32 mol%, a saponification degree of greater than or equal to 99 mol%, an MFR of 3.7 g/10 minutes (210°C, 2160-g load), and an amount of 1,2-glycol bond of 0.71 mol%. The resulting resin composition and molded article were evaluated in the same manner as in Example 1. The results are shown in Table 2.
- A resin composition and a molded article were obtained in the same manner as in Example 8 except that 85% by mass of the EVOH resin and 15% by mass of the hydroxy group-containing compound were mixed together. The resulting resin composition and molded article were evaluated in the same manner as in Example 1. The results are shown in Table 2.
- A resin composition and a molded article were obtained in the same manner as in Example 8 except that 93% by mass of the EVOH resin and 7% by mass of the hydroxy group-containing compound were mixed together. The resulting resin composition and molded article were evaluated in the same manner as in Example 1. The results are shown in Table 2.
- A resin composition and a molded article were obtained in the same manner as in Example 8 except that 97% by mass of the EVOH resin and 3% by mass of the hydroxy group-containing compound were mixed together. The resulting resin composition and molded article were evaluated in the same manner as in Example 1. The results are shown in Table 2.
- A resin composition and a molded article were obtained in the same manner as in Example 8 except that TMP as a hydroxy group-containing compound was replaced by TME The resulting resin composition and molded article were evaluated in the same manner as in Example 1. The results are shown in Table 2.
- A resin composition and a molded article were obtained in the same manner as in Example 8 except that TMP as a hydroxy group-containing compound was replaced by TeMM The resulting resin composition and molded article were evaluated in the same manner as in Example 1. The results are shown in Table 2.
- A resin composition, monolayer films, and a silage film were obtained in the same manner as in Example 1 except that no hydroxy group-containing compound was used. The resulting resin composition, monolayer films, and silage film were evaluated in the same manner as in Example 1. The results are shown in Table 3.
- A resin composition, monolayer films, and a silage film were obtained in the same manner as in Example 2 except that no hydroxy group-containing compound was used. The resulting resin composition, monolayer films, and silage film were evaluated in the same manner as in Example 1. The results are shown in Table 3.
- A resin composition, monolayer films, and a silage film were obtained in the same manner as in Example 1 except that 80% by mass of the EVOH resin and 20% by mass of the hydroxy group-containing compound were mixed together. The resulting resin composition, monolayer films, and silage film were evaluated in the same manner as in Example 1. The results are shown in Table 3.
- A resin composition, monolayer films, and a silage film were obtained in the same manner as in Example 1 except that 98% by mass of the EVOH resin and 2% by mass of the hydroxy group-containing compound were mixed together. The resulting resin composition, monolayer films, and silage film were evaluated in the same manner as in Example 1. The results are shown in Table 3.
- A resin composition, monolayer films, and a silage film were obtained in the same manner as in Example 1 except that TMP as a hydroxy group-containing compound was replaced by propylene glycol (also called "PPG") (molecular weight of 76, number of hydroxy groups of 2, ratio of (number of hydroxy groups per molecule)/(molecular weight) of 0.026, melting point of -59°C). The resulting resin composition, monolayer films, and silage film were evaluated in the same manner as in Example 1. The results are shown in Table 3. The resulting resin composition had bleed-out of the hydroxy group-containing compound and did not successfully adhere to adhesive resin layer. Therefore, no wrapping test was conducted.
- A resin composition, monolayer films, and a silage film were obtained in the same manner as in Example 1 except that TMP as a hydroxy group-containing compound was replaced by 1,5-pentanediol (also called "PeDO") (molecular weight of 104, number of hydroxy groups of 2, ratio of (number of hydroxy groups per molecule)/(molecular weight) of 0.019, melting point of -18°C). The resulting resin composition, monolayer films, and silage film were evaluated in the same manner as in Example 1. The results are shown in Table 3. The resulting resin composition had bleed-out of the hydroxy group-containing compound and did not successfully adhere to adhesive resin layer. Therefore, no wrapping test was conducted.
- A resin composition, monolayer films, and a silage film were obtained in the same manner as in Example 1 except that TMP as a hydroxy group-containing compound was replaced by 1,6-hexanediol (also called "HDO") (molecular weight of 118, number of hydroxy groups of 2, ratio of (number of hydroxy groups per molecule)/(molecular weight) of 0.017, melting point of 42°C). The resulting resin composition, monolayer films, and silage film were evaluated in the same manner as in Example 1. The results are shown in Table 3. The resulting resin composition had bleed-out of the hydroxy group-containing compound and did not successfully adhere to adhesive resin layer. Therefore, no wrapping test was conducted.
- A resin composition, monolayer films, and a silage film were obtained in the same manner as in Example 1 except that TMP as a hydroxy group-containing compound was replaced by 1,2,3-propanetriol (also called "PrTO") (molecular weight of 92, number of hydroxy groups of 3, ratio of (number of hydroxy groups per molecule)/(molecular weight) of 0.033, melting point of 18°C). The resulting resin composition, monolayer films, and silage film were evaluated in the same manner as in Example 1. The results are shown in Table 3. The resulting resin composition had bleed-out of the hydroxy group-containing compound and did not successfully adhere to adhesive resin layer. Therefore, no wrapping test was conducted.
- A resin composition and a molded article were obtained in the same manner as in Example 1 except that TMP as a hydroxy group-containing compound was replaced by 1,4-butanediol (also called "BDO") (molecular weight of 90, number of hydroxy groups of 2, ratio of (number of hydroxy groups per molecule)/(molecular weight) of 0.022, melting point of 20°C). The resulting resin composition and molded article were evaluated in the same manner as in Example 1. The results are shown in Table 3. The resulting resin composition had bleed-out of the hydroxy group-containing compound and did not successfully adhere to adhesive resin layer. Therefore, no wrapping test was conducted.
- Monolayer films and a silage film were obtained in the same manner as in Example 1 except that a linear low-density polyethylene (also called "LLDPE") (TUFLIN HS-7028 NT7 manufactured by The Dow Chemical Company (MFR, 1.0 g/10 minutes)) was used instead of the resulting resin composition. By the above-described methods, the oxygen transmission rate (OTR) of each of the resulting monolayer films was measured and stretchability (suitability for wrapping) of the resulting silage film was evaluated. The results are shown in Table 3.
- Monolayer films and a silage film were obtained in the same manner as in Example 1 except that polyamide 6 (also called "PA6") (UBE nylon 7024B manufactured by Ube Industries, Ltd.) was used instead of the resulting resin composition. By the above-described methods, the oxygen transmission rate (OTR) of each of the resulting monolayer films was measured and stretchability (suitability for wrapping) of the resulting silage film was evaluated. The results are shown in Table 3.
[Table 1] Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Resin type (EVOH (A) type) A1 A2 A1 A1 A1 A1 A1 Hydroxy group-containing low-molecular compound (B) Type TMP TMP TMP TMP TMP TME TeMM Molecular weight 134 134 134 134 134 120 136 Number of hydroxy groups 3 3 3 3 3 3 4 Ratio of (number of hydroxy groups per molecule) /(molecular weight) 0.022 0.022 0.022 0.022 0.022 0.025 0.029 Melting point (°C) 58 58 58 58 58 193 261 A/B (% by mass/% by mass) 90/10 90/10 85/15 93/7 97/3 90/10 90/10 Glass transition temperature (Tg) (°C) 21 27 19 29 37 16 18 Melting point (Tm) (°C) 152 165 151 156 158 150 149 Tensile modulus of elasticity MD (MPa) 330 900 250 500 800 240 210 23°C/50%RH TD (MPa) 410 800 300 540 840 290 270 Tensile strength at break MD (MPa) 30 30 25 25 30 30 25 23°C/50%RH TD (MPa) 25 30 25 30 25 25 30 Tensile elongation at break MD (%) 400 340 400 360 340 400 410 23°C/50%RH TD (%) 380 330 390 340 320 380 390 Puncture resistance (N) 4.1 3.8 3.9 4.2 4.8 3.9 3.9 23°C/50%RH OTR (cc•20 (µm/(m2•day•atm)) 13.2 3.1 21.2 9.9 6.8 22.1 24.2 20°C/85%RH Bleed-out X X X X X X X 40°C/100%RH Wrapping test Frequency of breakage (times) 0 0 0 0 0 0 0 [Table 2] Example 8 Example 9 Example 10 Example 11 Example 12 Example 13 Example 14 Resin type (EVOH (A) type) A3 A4 A3 A3 A3 A3 A3 Hydroxy group-containing low-molecular compound (B) Type TMP TMP TMP TMP TMP TME TeMM Molecular weight 134 134 134 134 134 120 136 Number of hydroxy groups 3 3 3 3 3 3 4 Ratio of (number of hydroxy groups per molecule) /(molecular weight) 0.022 0.022 0.022 0.022 0.022 0.025 0.029 Melting point (°C) 58 58 58 58 58 193 261 A/B (% by mass/% by mass) 90/10 90/10 85/15 93/7 97/3 90/10 90/10 Glass transition temperature (Tg) (°C) 20 28 20 28 38 17 18 Melting point (Tm) (°C) 151 166 150 155 158 149 147 Tensile modulus of elasticity MD (MPa) 340 910 260 510 790 230 200 23°C/50%RH TD (MPa) 400 790 300 530 850 280 260 Tensile strength at break MD (MPa) 30 30 25 25 30 30 25 23°C/50%RH TD (MPa) 25 25 25 30 30 25 30 Tensile elongation at break MD (%) 410 350 410 360 350 410 400 23°C/50%RH TD(%) 370 330 380 340 320 380 380 Puncture resistance (N) 4.0 3.7 3.9 4.3 4.7 3.8 3.9 23°C/50%RH OTR (cc•20 µm/(m2•day•atm)) 13.0 2.9 21.4 9.6 6.4 22.0 23.9 20°C/85%RH Bleed-out X X X X X X X 40°C/100%RH Wrapping test Frequency of breakage (times) 0 0 0 0 0 0 0 [Table 3] Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Comparative Example 7 Comparative Example 8 Comparative Example 9 Comparative Example 10 Comparative Example 11 Resin type A1 A2 A1 A1 A1 A1 A1 A1 A1 LLDPE PA6 Hydroxy-group-containing low-molecular compound (B) Type - - TMP TMP PPG PeDO HDO PrTO BDO - - Molecular weight - - 134 134 76 104 118 92 90 - - Number of hydroxy groups - - 3 3 2 2 2 3 2 - - Ratio of (number of hydroxy groups per molecule) /(molecular weight) - - 0.022 0.022 0.026 0.019 0.017 0.033 0.022 - - Melting point (°C) - - 58 58 -59 -18 42 18 20 - - A/B (% by mass/% by mass) - - 80/20 98/2 90/10 90/10 90/10 90/10 90/10 - - Glass transition temperature (Tg) (°C) 52 57 19 41 20 48 45 14 36 - - Melting point (Tm) (°C) 165 183 151 159 150 160 162 160 155 - - Tensile modulus of elasticity MD (MPa) 1200 2100 220 1000 300 560 600 210 480 - - 23°C/50°0RH TD (MPa) 1100 1700 280 900 420 600 820 260 500 - - Tensile strength at break MD (MPa) 35 40 25 30 30 35 35 30 35 - - 23°C/50%RH TD (MPa) 25 35 25 30 25 25 25 25 25 - - Tensile elongation at break MD (%) 250 40 400 290 410 340 350 410 360 - - 23°C/50%RH TD (%) 290 40 280 300 400 280 210 420 320 - - Puncture resistance (N) 4.9 4.4 3.6 4.8 4.1 3.4 3.2 3.8 3.7 - - 23°C/50%RH OTR (cc•20 µm/(m2•day•atm)) 5.1 1.9 34.2 6.2 21.1 49.2 21.7 33.2 30.2 200< 67.5 20°C/85%RH Bleed-out - - X X Y Y Y Y Y Y Y 40°C/100%RH Wrapping test Frequency of breakage (times) 5 5 0 2 - - - - - 0 0 - All the embodiments and examples disclosed herein are provided merely for illustrative purposes and are not limitative in all respects. The scope of the present invention is defined not by the description above but by the claims. All the modifications equivalent to the claims and within the range of definition made by the claims are encompassed by the scope of the present invention.
Claims (11)
- Use of a film as a silage film, wherein the film comprises:at least one layer of a resin composition comprising an ethylene-vinyl alcohol copolymer (A) and a hydroxy group-containing compound (B), whereinsaid hydroxy group-containing compound (B) has a molecular weight less than or equal to 200, and a ratio of number of hydroxy groups per molecule to the molecular weight ranging from 0.02 to 0.03, and a melting point of greater than or equal to 23°C, anda content of the hydroxy group-containing compound (B) in the resin composition ranges from 3% to 15% by mass.
- Use according to claim 1, wherein the melting point of said hydroxy group-containing compound (B) ranges from 23°C to 200°C.
- Use according to claim 1 or 2, wherein said hydroxy group-containing compound (B) has a ratio of number of hydroxy groups per molecule to the molecular weight ranging from 0.022 to 0.025.
- Use according to any one of claims 1 to 3, wherein said hydroxy group-containing compound (B) is 1,1,1-trimethylolpropane.
- Use according to any one of claims 1 to 4, wherein the content of said hydroxy group-containing compound (B) in said resin composition ranges from 5% to 10% by mass.
- Use according to any one of claims 1 to 5, wherein said ethylene-vinyl alcohol copolymer (A) has an ethylene content ranging from 20 mol% to 60 mol%.
- Use according to any one of claims 1 to 6, wherein a total layer thickness of the silage film ranges from 5 µm to 200 µm and a thickness ratio of the layer of said resin composition in the total layer thickness ranges from 1% to 20%.
- Use according to any one of claims 1 to 7, further comprising a polyolefin resin layer on at least one side of the layer of said resin composition.
- Use according to any one of claims 1 to 8, wherein the layer of said resin composition is an intermediate layer.
- Wrapped fodder comprising the silage film, wherein the silage film comprises: at least one layer of a resin of a resin composition comprising an ethylene-vinyl alcohol copolymer (A) and a hydroxy group-containing compound (B), wherein
said hydroxy group-containing compound (B) has a molecular weight less than or equal to 200, and a ratio of number of hydroxy groups per molecule to the molecular weight ranging from 0.02 to 0.03, and a melting point of greater than or equal to 23°C, and
a content of the hydroxy group-containing compound (B) in the resin composition ranges from 3% to 15% by mass. - A storage method of fodder, using the wrapped fodder as claimed in claim 10.
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US201462085445P | 2014-11-28 | 2014-11-28 | |
PCT/JP2015/083058 WO2016084840A1 (en) | 2014-11-28 | 2015-11-25 | Silage film, fodder packaging material, and fodder storage method |
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EP3225651A1 EP3225651A1 (en) | 2017-10-04 |
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US (1) | US10814596B2 (en) |
EP (1) | EP3225651B1 (en) |
JP (1) | JP6307628B2 (en) |
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DE102016110570A1 (en) * | 2016-06-08 | 2017-12-14 | Rkw Se | Coat foil |
JP6680174B2 (en) * | 2016-10-12 | 2020-04-15 | 三菱ケミカル株式会社 | Silage film |
PL423416A1 (en) * | 2017-11-10 | 2019-05-20 | Fol Gos Spolka Z Ograniczona Odpowiedzialnoscia | Packaging film for silage bales wrapping and method for producing it |
BR112021011286A2 (en) * | 2018-12-11 | 2021-08-31 | Dow Global Technologies Llc | MULTILAYER SILOBAG AND METHODS FOR USING MULTILAYER SILOBAG AND FOR MANUFACTURING A MULTILAYER SILOBAG |
JP7314734B2 (en) | 2019-09-17 | 2023-07-26 | 株式会社デンソーウェーブ | Fluid heating device |
US11697723B2 (en) | 2019-10-04 | 2023-07-11 | Kuraray Co., Ltd. | Stretchable multilayer article |
Family Cites Families (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6285942A (en) | 1986-09-24 | 1987-04-20 | 株式会社クラレ | Multilayer molded shape |
US5412005A (en) * | 1991-05-03 | 1995-05-02 | Novamont S.P.A. | Biodegradable polymeric compositions based on starch and thermoplastic polymers |
JPH08151469A (en) | 1994-11-25 | 1996-06-11 | Nippon Synthetic Chem Ind Co Ltd:The | Resin composition for injection foaming and molded object obtained therefrom |
JPH101571A (en) | 1996-06-14 | 1998-01-06 | Riken Vitamin Co Ltd | Agricultural polyolefin resin composition |
JP2000119470A (en) | 1998-10-15 | 2000-04-25 | Sumitomo Chem Co Ltd | Saponified ethylene/vinyl ester copolymer composition and film |
CA2291217C (en) * | 1998-12-09 | 2004-09-21 | Kuraray Co., Ltd. | Vinyl alcohol polymer and its composition |
US6686405B1 (en) * | 1999-07-23 | 2004-02-03 | Kuraray Co., Ltd. | Process for producing ethylene-vinyl alcohol copolymer resin, process for producing pellets and resin pellets |
JP4472100B2 (en) | 2000-04-03 | 2010-06-02 | 株式会社クラレ | Polyvinyl alcohol resin composition |
US6608121B2 (en) * | 2000-08-07 | 2003-08-19 | Kuraray Co., Ltd. | Water-soluble resin composition and water-soluble film |
US20030157354A1 (en) | 2002-02-15 | 2003-08-21 | Van Veghel Michael W. | Transparent, coated, shrinkable, oriented polypropylene film |
JP3876739B2 (en) | 2002-03-26 | 2007-02-07 | 宇部興産株式会社 | Grass film |
JP3897097B2 (en) | 2002-03-26 | 2007-03-22 | 株式会社クラレ | POLYVINYL ALCOHOL RESIN COMPOSITION AND MOLDED ARTICLE |
US6803113B2 (en) | 2002-09-13 | 2004-10-12 | Honeywell International Inc. | High barrier antifog laminate for case ready meat packaging |
US6821590B2 (en) | 2003-02-14 | 2004-11-23 | Monosol, Llc | Starch-loaded polyvinyl alcohol copolymer film |
EP1594915A2 (en) | 2003-02-14 | 2005-11-16 | Monosol, LLC | Starch-loaded polyvinyl alcohol copolymer film for packaging non-liquid product and method for making the same |
DE102004043907A1 (en) | 2004-09-10 | 2006-03-16 | Kuraray Specialities Europe Gmbh | Plasticizer-containing PVB films with ether bonds containing carboxylic acid esters as co-plasticizer |
CN104945683A (en) | 2006-04-18 | 2015-09-30 | 普朗蒂克科技有限公司 | Polymeric films |
CN101323685B (en) | 2008-06-27 | 2010-09-29 | 哈尔滨隆华艺美包装制品有限公司 | Linear low density blending film of polyethylene and ethylene-ethenol copolymer and method for making the same |
JP5679720B2 (en) | 2009-07-28 | 2015-03-04 | 日本合成化学工業株式会社 | Silage film |
ITGE20110121A1 (en) * | 2011-10-25 | 2013-04-26 | Gamma Srl 2 | MULTI-LAYER BARRIER FILM AND USE OF THIS MULTILAYER BARRIER FILM |
US9447269B2 (en) * | 2013-01-18 | 2016-09-20 | Dow Global Technologies Llc | Modified flexible EVOH for high performance films |
JP6085498B2 (en) * | 2013-03-06 | 2017-02-22 | 株式会社クラレ | Silage film |
EP3135724B1 (en) | 2014-04-25 | 2019-04-10 | Kuraray Co., Ltd. | Ethylene-vinylalcohol resin composition, molded product, and multilayer structure |
-
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